Cities Index.
Agenda packet

Carmel-by-the-Sea City Council
August 4, 2026

Document
Agenda packet
Meeting
August 4, 2026
Body
Carmel-by-the-Sea City Council
Pages
569
Original file
106.9 MB
Text extracted from the city's file for reading and search. Open the original on carmelbytheseaca.api.civicclerk.com. That file is the official record.

-----------------------~----------
64 I City of Cannel LUP submittal (CML-LUP-SUB-R3) stf rptl.13.03.doc Runoff from the City flows into Carmel Bay, which is designated both as an Area of Special Biological Significance (ASBS) in the California Ocean Plan, and as a California Fish and Game Ecological Reserve. It is also part of the Monterey Bay National Marine Sanctuary. An ASBS is an area designated by the State Water Resources Control Board that requires special protection of species or biological communities that could be impacted by water quality degradation. As discussed in the Public Access finding, Carmel Beach and the shoreline also is a highly popular public recreation area.

Maintaining and restoring water quality throughout the Carmel River watershed, and in this case, Carmel's urban landscape, is necessary to protect these sensitive coastal resources.

The Commission shares responsibility for regulating non-point source water pollution in the Coastal Zone of California with State Water Resources Control Board (SWRCB) and the coastal Regional Water Quality Control Boards (RWQCBs). The Commission and the SWRCB have been co-leads in developing and implementing the January 2000 Plan for California's Non-point Source Pollution Control Program {Plan), which outlines a strategy to ensure that management measures and practices that reduce or prevent polluted runoff are implemented over a fifteen-year period. Some of these management measures and practices are best implemented at the local planning level, since they can be most cost effective during the design stage of development. •
The Commission and the Central Coast Water Quality Control Board {CCWQCB) are • both working to protect water quality in the Carmel area, although each has different authorities and responsibilities in that effort. The Commission has primary responsibility for protecting many coastal resources, including water quality, from the impacts of development in the coastal zone. The SWRCB and RWQCBs have primary responsibility for regulating discharges that may impact waters of the state through writing discharge permits, investigating water quality impacts, monitoring discharges, setting water quality standards and taking enforcement actions where standards are violated.

Carmel LUP as Submitted.

The City's amended LUP submittal includes a variety of important policies to address water quality issues. These include policies to develop a City-wide Storm Water Utility Program that will also address the City's need to implement a National Pollution Discharge and Elimination System permit; policies to regulate illegal discharges; watershed protection policies to retain natural drainages; restore areas beneficial to water quality; and so forth.

The submitted LUP also includes development policies that require the protection of natural drainage systems, site planning to address drainage and polluted runoff, and the use of Best Management Practices {BMPs ). Specific standards include requirements to: design post-construction BMPs to infiltrate and/or treat, storm runoff; minimize impervious surfaces; use a water quality checklist in project reviews; and California Coastal Commission
•
ATTACHMENT 11

Page 488 of 569 ends

•
•
•
City of Carmel LUP submittal (CML-LUP-SUB-R3) stf rpt2.13.03.doc I 65 incorporate BMPs into commercial developments. Please see pages 117-124 for the entire listing of LUP water quality policies submitted by the City.

Coastal Act Consistency
The Commission recognizes that new development in Carmel-by-the-Sea has the potential to adversely impact coastal water quality through the removal of native vegetation, . increase of impervious surfaces, increase of runoff, erosion, and sedimentation, and the introduction of pollutants such as petroleum, cleaning products, pesticides, and other pollutant sources. Coastal Act Sections 30230 and 30231 listed above require that coastal water quality be protected through policies that manage these types of new development impacts.

In particular, new development often results in an increase in impervious surface, which in tum decreases the infiltrative function and capacity of existing permeable land on project sites. As discussed in the community character finding, redevelopment activity in Carmel has the potential to lead to increased impermeable surface, particularly on the smaller, 4000 square foot lots in the City where typically small structures are located. In the last several years the Commission has reviewed permits for residential demolition and rebuilds that have generally resulted in significant increased impervious coverage.

For example, in the last year the average proposed increase in site coverage on 4000 square foot lots was approximately 375 square feet or 9%. This includes, though, a wide range of proposed changes in coverage, including some projects that reduced coverage slightly to projects that increased coverage by over 70% or greater than 1 000 square feet.

The reduction in permeable surface therefore leads to an increase in the volume and velocity of storm water runoff that can be expected to leave the site. The cumulative effect of increased impervious surface is that the peak stream discharge is increased and the peak occurs much sooner after precipitation events. Changes in the stream flow result in modification to stream morphology. Additionally, runoff from impervious surfaces results in increased erosion, sedimentation, and non-point source pollution.

Recently, a study prepared by the Pews Oceans Commission discussed the link between increasing impervious surfaces and degraded water quality:

Land conversion rates are profoundly important in light of recent research on aquatic ecosystems. A variety of studies during the past decade converge on a central point: When more than ten percent of the acreage of a watershed is covered in roads, parking lots, rooftops, and other impervious surfaces, the rivers and streams within the watershed become seriously degraded . ...

If the percentage of the coast that is developed rises sharply {from 14 percent to 25 percent) over the next 25 years, these studies point to an irreversible decline in coastal aquatic ecosystem health.

The report acknowledges that site coverage is but one component of the land useCalifornia Coastal Commission ATTACHMENT 11

Page 489 of 569 ends

66 I City of Carmel LUP submittal (CML-LUP-SUB-R3) stf rpt2.13.03.doc water quality nexus, but it does underscore the importance of minimizing impervious site coverage overall.

In a setting such as Carmel, where informal street design (no curbs and gutters generally; unpaved road edges, etc.) and drainage are the norm, increased site runoff could have a significant impact on existing runoff patterns, ultimately resulting in increased erosion and a future need to manage runoff through engineered drainage structures. Thus, minimizing impervious coverage is essential to both protecting water quality, and maintaining the informal streetscape of Carmel.

Maintaining permeable surfaces and managing runoff onsite also helps to limit the impacts of pollutant runoff. Pollutants commonly found in runoff associated with new development include:
• petroleum hydrocarbons such as oil and grease from vehicles; • heavy metals;
• synthetic organic chemicals including paint and household cleaners; •· soap and dirt from washing vehicles;
• dirt and vegetation from yard maintenance;
• litter and organic matter;
• fertilizers, herbicides, and pesticides from household gardening or more intensive agricultural land use;
• nutrients from wastewater discharge, animal waste and crop residue; and • bacteria and pathogens from wastewater discharge and animal waste.

The discharge o.f these pollutants to coastal waters can cause cumulative impacts such as:
• eutrophication and anoxic conditions resulting in fish kills and diseases and the alteration of aquatic habitat, including adverse changes to species composition and size;
• excess nutrients causing algae blooms and sedimentation increasing turbidity. which both reduce the penetration of sunlight needed by aquatic vegetation that provide food and cover for aquatic species;
• disruptions to the reproductive cycle of aquatic species; California Coastal Commission
•
•
•
ATTACHMENT 11

Page 490 of 569 ends

•
City of Carmel LUP submittal (CML-LUP-SUB-R3) stf rpt2.13.03.doc I 67 • acute and sub-lethal toxicity in marine organisms leading to adverse changes in reproduction and feeding behavior; and
• human diseases such as hepatitis and dysentery.

These impacts reduce the biological productivity and the quality of coastal waters, streams, wetlands, estuaries, and lakes, reduce optimum populations of marine organisms and have adverse impacts on human health. They are particularly important to manage in the vicinity of significant marine resources such as Carmel Bay - an Area of Special Biological Significance and Ecological Reserve.

As summarized above, Carmel's submitted LUP contains a comprehensive set of water quality policies designed to protect and enhance water quality and the beneficial uses of focal coastal waters and ground waters from adverse impacts related to land development. The objectives of the policies are three-fold:
• Protect, enhance and restore wetlands, streams, and groundwater recharge areas.
• Promote the elimination of pollutant discharge, including non-point source pollution, into the City's waters through new construction and development regulation including but not limited to site planning, environmental review and • mitigation, and permit conditions of approval.
•
• Promote Best Management Practices to limit water quality impacts from existing development, including septic system maintenance and City services.

With the exception of two areas, -minimizing impervious surfaces, and managing polluted runoff -- these policies contained in the Carmel LUP provide for the protection and enhancement of water quality and the beneficial uses of local coastal waters and ground waters from adverse impacts related to land development. Thus, as submitted, with the exception of the policies discussed below, the LUP is consistent with the water quality protection policies of the Coastal Act (30230, 30231 ).

Modifications t
Minimizing Impervious Surfaces
As discussed above, minimizing impervious surfaces is critical to maintaining and protecting water quality in Carmel. As discussed in the Community Character finding, it is also critical to protecting the urban forest and informal streetscape of Carmel - both essential pieces of Carmel's unique community character.

The City has submitted a water quality policy that requires the new development minimize development footprints and directly connected impervious surfaces, as well as the increase in new impervious surfaces. The LUP also includes a policy to require new development to protect the absorption, purification, and retention functions of California Coastal Commission
ATTACHMENT 11

Page 491 of 569 ends

-------------------------------------
-----------
68 I City of Carmel LUP submittal (CML-LUP-SUB-R3) stf rpt2.13.03.doc natural systems on the site of proposed developments. Nonetheless, given the critical importance of this issue to the protection of water quality, particularly on the smaller, more constrained 4000 square foot lots of Carmel, it is necessary that the LUP have a specific impervious surface limitation for the small lot scenario. Without such specific limitation, it will be more likely that the small lots of Carmel will redevelop over time with more impervious surfaces, and that the cumulative impacts of these surfaces on water quality will be substantial.

Modification 7. therefore, requires that non-permeable surface on the 4000 square foot lots not exceed 50% or 2000 square feet. Such a limitation allows for a reasonable development envelope on these lots, while assuring that at least half of the available site area is available for natural percolation, as well as for the design of on-site drainage features. As previously discussed, most redevelopment projects in Carmel are resulting in increased impervious surfaces. In the last year, 4 out 7 proposed redevelopment projects proposed impervious surface coverage greater than 50% (ranging from 55% to 65%). Three other projects, though, were proposed at less than 50%. Thus, it is reasonable and feasible to limit coverage in this way. In conjunction with other proposed limits to protect community character, this limit also provides reasonable development options even with the 1600 square foot single story house. Thus, such a project would have an additional 400 square feet of impervious surface to work with, which might include, for example, a driveway of 150 square feet, and 250 square feet of walkway and outdoor patio surface.

Finally, it should be emphasized that this water quality modification also supports and works with the community character policies of the modified LUP that seek to protect the small scale look and feel, as well as the urban forest resources, of Carmel's residential neighborhoods. The coverage limitation will also assure that the informal streetscapes of Carmel do not gradually convert to hardscapes, with concrete gutters and other drainage features made necessary by increased impervious surfaces the watershed. Given the significant potential for redevelopment in Carmel, and the associated increases in coverage that will occur, even with the proposed limitations of the modified LUP, a specific coverage limitation is the only mechanism to assure water quality protectiop over the long run. Therefore, to assure consistency with Coastal Act sections 30230 and 30231, Modification 7 is necessary to require the 50% coverage limit on the 4000 square foot lot.

Managing Polluted Runoff
The Commission finds that the application of appropriate methods and design goals for sizing BMPs is critical to the successful function of post-construction treatment Best Management Practices (BMPs) in removing pollutants in storm-water to the maximum extent practicable. The majority of runoff is generated from small storms because most storms are small. Additionally, storm-water runoff typically conveys a disproportionate amount of pollutants in the initial period that runoff is generated during a storm event.

Designing BMPs for the small more frequent storms, rather than for the large infrequent California Coastal Commission
•
•
•
ATTACHMENT 11

Page 492 of 569 ends

•
•
City of Carmel LUP submittal (CML-LUP-SUB-R3) stf rpt2.13.03.doc I 69 storms, results in optimal BMP performance at lower cost.

The Commission also finds that sizing the proposed post-construction structural BMPs to accommodate the storm-water runoff from the 85th percentile storm event, in this case, is equivalent to sizing BMPs based on the point of diminishing returns (i.e. the BMP capacity beyond which, insignificant increases in pollutants removal (and hence water quality protection) will occur, relative to the additional costs). Therefore,· the Commission requires that the proposed post-construction structural BMPs (or suites of BMPs) shall be designed to infiltrate and/or treat, the amount of storm-water runoff produced by all storms up to and including the 85th percentile, 24-hour storm event for volume-based BMPs, and/or the 85th percentile, 1-hour storm event, with an appropriate safety factor (i.e., 2 or greater), for flow-based BMPs. As submitted, the City of Carmel has not provided a specific design goal for BMPs, although it does have a policy generally addressing the treatment and filtering of runoff. Therefore, to assure consistency with Coastal Act sections 30230 and 30231, Modifications 60 - 66 are necessary.

Conclusion
As modified above, the Carmel-by-the Sea LUP includes a comprehensive and adequate set of policies to meet the goal of protecting and enhancing water quality of local coastal waters and ground waters from adverse impacts related to development.

These policies specifically provide for minimizing impermeable surfaces and the requirement of Best Management Practices (BMPs) related to siting and design of the project and the post-construction phase of the project. It supports the Commission's view that all development has the potential to impact water quality, and that site design and source control measures can often mitigate such impacts, decreasing the need for structural treatment controls. Therefore, the Commission finds that the LUP water quality policies as modified are consistent with Coastal Act sections 30230 and 30231.

G. Environmentally Sensitive Habitat
Coastal Act Sections 301 07 .5, 30231, and 30240 define ESHA and afford protection of such areas and fheir associated biological productivity, and state:

Section 30107.5 Environmentally sensitive area" means any area in which plant or animal life or their habitats are either rare or especially valuable because of their special nature or role in an ecosystem and which could be easily disturbed or degraded by human activities and developments.

Section 30231. The biological productivity and the quality of coastal waters, streams, wetlands, estuaries, and lakes appropriate to maintain optimum populations of marine organisms and for the protection of human health shall be maintained and, where feasible, restored through, among other means, minimizing adverse effects of waste water discharges and entrainment, • controlling runoff, preventing depletion of ground water supplies and substantial California Coastal Commission
ATTACHMENT 11

Page 493 of 569 ends

'
70 I City of Carmel LUP submittal (CML-LUP-SUB-R3) stf rpt2.13.03.doc interference with surface water flow, encouraging waste water reclamation, maintaining natural vegetation buffer areas that protect riparian habitats, and minimizing alteration of natural streams.

Section 30240. (a) Environmentally sensitive habitat areas shall be protected against any significant disruption of habitat values, and only uses dependent on those resources shall be allowed within those areas.
(b) Development in areas adjacent to environmentally sensitive habitat areas and parks and recreation areas shall be sited and designed to prevent impacts which would significantly degrade those areas, and shall be compatible with the continuance of those habitat and recreation areas.

Additional Section 30233 in part provides wetland protection as follows:
(a) The diking, filling, or dredging of open coastal waters, wetlands, estuaries, and Jakes shall be permitted in accordance with other applicable provisions of this division, where there is no feasible less environmentally damaging alternative, and where feasible mitigation measures have been provided to minimize adverse environmental effects, and shall be limited to the following: ... (5) Incidental public service purposes, including but not limited to, burying •
cables and pipes or inspection of piers and maintenance of existing intake and • outfall lines.
(6) Mineral extraction, including sand for restoring beaches, except in environmentally sensitive areas.
(7) Restoration purposes.
(B) Nature study, aquaculture, or similar resource dependent activities.

Although the City of Carmel-by-the-Sea is largely built out over most of its acreage, it does contain some areas of environmentally sensitive habitats. The proposed Land Use Plan re-submittal does an adequate job of ensuring that ESHA is protected ' pursuant to the Coastal Act policies.

First, the Land Use Plan identifies known ESHA in the City. The introduction to the Coastal Resource Protection chapter (pages 83 -92} and Appendix E: ESHA Study map describes the City's ESHAs including Monterey pine forest, wetlands, riparian forest. wet meadow, and coastal terrace prairie, and known occurrences of specialstatus plant and wildlife species, including Hickman's onion, and Monterey dusky footed woodrat. These are located in Pescadero Canyon, Mission Trails Nature Preserve, and Carmel beach. The Commission notes that although Monterey Pine in Pescacdero Canyon is appropriately identified as ESHA, it is not identified as a Special Status Species. This is apparently because when Appendix E was writing in 1995, it did not yet California Coastal Commission
•
ATTACHMENT 11

Page 494 of 569 ends

•
•
City of Carmel LUP submittal (CML-LUP-SUB-R3) stf rpt2.13.03.doc I 71 have that status. Now itis universally recognized as a Special Status Species (CNPS 18, Federal Species of Concern). The Commission biologist has reviewed the ESHA appendix and concurs that ESHA has been appropriately identified and described. The analysis is based on the Coastal Act definition of ESHA and has identified those areas in which plant or animal life or their habitats are either rare or especially valuable because of their special nature or role in an ecosystem and which could be easily disturbed or degraded by human activities and developments.

Second, the Land Use Plan provides for identification of additional ESHA in the future (Policies G9-22; P9-256), and also makes it clear that the maps show just currently designated ESHA (page 84 ).

Third, the Land Use Plan provides for protection of ESHA from most new development.

Most of the ESHA is designated "Open Space." Public recreational and cultural uses and activities that are compatible with the natural resources are allowed (page 29).

Policy 9-256 mimics Coastal Act language to " protect environmentally sensitive habitat areas against any significant disruption of habitat values. Only uses dependant upon those resources shall be allowed." Additionally, the Land Use Plan provides many very specific management measures for the three main ESHA areas to ensure that the public development is compatible with resource protection.

Private lots in ESHA are allowed limited single-family development to address Constitutional takings issues (Policy P9-323). However, the Land Use Plan also provides for transfer of development credits (Policy P9-313) and/or public acquisition programs (see policy citations below) to hopefully prevent the remaining private ESHA parcels from developing.

In addition to the noted open space areas, Monterey pine (and other) trees occur throughout the City. The Land Use Plan contains numerous policies designed to maintain these trees (through not cutting them, appropriate pruning, avoidance of root damage, and other measures) and planting new ones. Appendix Dis a detailed Forest Management Plan that covers the entire City.

Fourth, the Land Use Plan provides for buffers to ESHA consistent with Section 30240b. One-hundred foot buffers to riparian areas for chemical applications are established (Policy P9-315), as is a minimum 50 foot development buffer for Pescadero Creek (Policy P9-323). The ESHA appendix further. indicates that a 100-foot buffer is recommended for Pescadero Creek (page 5-11 of Appendix ESHA Study) and mitigation measures are required for adjacent development (page 5-11 of Appendix ESHA Study). The Land Use Plan also commits to a program of notifying residents adjacent to ESHAs of protective measures {Policy P9-317). Elsewhere, a 30-foot ESHA buffer is required (Figure 9.7; page 5-24 of Appendix ESHA Study), including specifically a 30-foot vegetation buffer along the perimeter of Mission Trail Nature Preserve (Policy P9-321 ).
• Finally. the Land Use Plan provides for many maintenance, rehabilitation, · and California Coastal Commission
ATTACHMENT 11

Page 495 of 569 ends

-
----------------
72 I City of Carmel LUP submittal (CML-LUP-SUB-R3) stf rpt2.13.03.doc improvement measures to ensure that EHSA remains vibrant. Examples of such measures include restoring native dune habitat (Policies P-9-181; P9-329), controlling invasive non-natives (Policy P-9-182), pruning so as not to disturb nesting birds (Policy P9-240). Almost all ESHA is within City owned land and the cited policies and others represent a commitment to maintain the City's ESHA. Furthermore, several policies (e.g .• 09-35, P9-199, 09-46, P9-310) commit the City to acquiring additional existing or potential habitat areas.

However, there are two areas of concern within Appendix E. the Mission Trails Nature Preserve Master Plan: 1) the deletion of an objective to enhance the Preserve's wetlands by encouraging the channelized ditch to revert to a more natural channel; and 2) the declaration that the ESHA boundary could not be extended beyond the Preserve boundaries. As noted elsewhere in the LUP. the benefits to maintaining natural drainage patterns include absorption, filtering, and conveyance of storm water, provision of habitat, and enhancing visual resources. The Master Plan allows for maintenance of the natural channel to ensure public safety and protect structures threatened by erosion. However if allowed to be entirely channelized, along with decreasing habitat values, the natural functioning of the drainage will diminish which may actually exacerbate the problems that were intended to be prevented. Secondly, It is well known and understood that ESHA boundaries rarely follow manmade distinctions and thus, precluding ESHA from extending beyond the boundaries of the Preserve would not be consistent with Coastal Act policies protecting ESHA. Therefore, since Appendix E is an attachment of the submitted Land Use Plan, the Commission recommends modifications 69 and 70 to bring the Mission Trails Nature Preserve Master Plan into conformance with the Coastal Act.

In conclusion, the sum total of cited and related policies will ensure protection of ESHA consistent with the cited Coastal Act policies.

Finally, there are two structural problems with the Land Use Plan ESHA related policies.

Appendices A-1 through A-4 of the Forest Management Plan contain outdated ordinance references. These need to be evaluated in the context of the Implementation Plan and canna~ be certified at this time. Section IV of the Forest Management Plan repeats policies; of the Coastal Resources chapter, but fails to update all those that reference the City Forester (as opposed to the Forest, Parks, and Beach Director}. Therefore, modifications (see Modification 62 and 63) are necessary to correct and update these deficiencies. If so modified, the Land Use Plan will be fully consistent with Coastal Act ESHA policies.

H. Development
Coastal Act Section 30250 states:
(a) New residential, commercial, or industrial development, except as otherwise provided in this division, shall be located within, contiguous with, or in close •
•
proximity to, existing developed areas able to accommodate it or, where such • California Coastal Commission
ATTACHMENT 11

Page 496 of 569 ends

•
•
•
City of Carmel LUP submittal (CML-LUP-SUB-RJ) stf rpt2.13.03.doc I 73 areas are not able to accommodate it, in other areas with adequate public services and where it will not have significant adverse effects, either individually or cumulatively, on coastal resources. In addition, land divisions, other than /eases for agricultural uses, outside existing developed areas shall be permitted only where 50 percent of the usable parcels in the area have been developed and the created parcels would be no smaller than the average size of surrounding parcels.

The Land Use Plan has a map and text, which designates land use categories throughout the City, consistent with the Coastal Act mandate to indicate kinds, locations, and intensities of land use. Generally, there is a commercial core surrounded by residential neighborhoods. Carmel-by-the-Sea is within the urbanized Monterey Peninsula. Except for the current lack of water, described in Finding E above, the proposed intensity of and locations of development is consistent with Coastal Act policies to concentrate development in urban areas with available services.

I. California Environmental Quality Act (CEQA)
Section 21080.9 of the Public Resources Code (CEQA) exempts local governments from the requirement of preparing an environmental impact report (EIR) in connection with a Local Coastal Program (LCP). Instead, certification of an LCP by the Coastal Commission is subject to the requirements of CEQA. The Coastal Commission's regulatory program involving the preparation, approval and certification of local coastal programs has been certified by the Resources Agency under Public Resources Code Section 21080.5 as the functional equivalent of CEQA review. As a result of this certification, the Coastal Commission is exempt from the requirement of preparing an EIR in connection with a local coastal program. As set forth above, the Commission finds that the Carmel-by-the-Sea Land Use Plan as modified conforms with the Coastal Act policies regarding protection of the environment. The Commission finds that approval of the modified Land Use Plan will not result in significant adverse environmental impacts within the meaning of CEQA. The Commission further finds that there are no feasible alternatives or additional mitigation measures that would substantially lessen any significant adverse impact on the environment from approval of the Land Use Plan as modified .

California Coastal Commission
ATTACHMENT 11

Page 497 of 569 ends

---------------------------------
•
I •
•
•
ATTACHMENT 11

Page 498 of 569 ends

California Coastal Commission
November 2000 Meeting in Los Angeles
C:\TEMP\Carmel Community Character Report.doc
STATE OF CALIFORNIA – THE RESOURCES AGENCY GRAY DAVIS, Governor

CALIFORNIA COASTAL COMMISSION

CENTRAL COAST DISTRICT OFFICE
725 FRONT STREET, SUITE 300
SANTA CRUZ, CA 95060
(831) 427-4863
November 2, 2000 (for November 15, 2000 Hearing)
To: Coastal Commissioners and Interested Persons
From: Tami Grove, Central Coast Deputy Director
Subject: Coastal Development Review and LCP Completion/Protection of Community Character in the City of Carmel-by-the-Sea
Summary
Recent development trends have raised concerns about the preservation of the unique community character in the City of Carmel-by-the-Sea. Although the City does not have a certified Local Coastal Program (LCP), most development in Carmel is excluded from Commission review by virtue of a categorical exclusion adopted in 1977. Residential demolitions, though, are not excluded from coastal development permit requirements. Such demolitions, and the subsequent replacement homes, have the potential to impact Carmel’s community character, particularly if a demolition is proposed for a structure that has special historical significance, architectural style and scale, or if the replacement structure itself does not fit with Carmel’s unique character. As of the date of this staff report, there are approximately 17 projects involving residential demolitions pending in the Commission’s coastal development review process; the majority of these applications are already (or are about to be) filed and require timely Commission review. These projects have been postponed until the December hearing, to allow for Commission consideration of the question of community character preservation prior to their disposition—and to provide direction to Commission staff accordingly.

Until recently, the Commission has been processing residential demolitions as administrative permit items, or even with coastal development permit waivers, without a public hearing per se. The basis for this review was the staff conclusion that residential demolition projects were not individually or cumulatively degrading Carmel’s character, in part because of the rigorous local review of such projects, and because no significant character concerns were raised in each specific case evaluated. Where concerns have been raised, particularly about the historical character of buildings, the Commission has issued administrative or regular coastal development permits with appropriate conditions to preserve historical or characteristic elements of such structures.

Carmel’s unique character is defined by multiple factors, including the tree canopy and informal streetscape, the scale and style of residential buildings (including the “Carmel cottage”), historical character, and so forth. However, without specific elaboration of this character through a certified Local Coastal Program, it is difficult to conclude whether the Coastal Act requirement to protect community character is being met. The City is currently working to complete its LCP for submittal to the Commission – the target for the Land Use Plan is April 2001, with the complete LCP submitted in December 2001.

Until then, though, for each application approved, the Commission must make a specific finding that such approval would not prejudice the completion of a Local Coastal Program that conforms with Coastal Act W11
ATTACHMENT 12

Page 499 of 569 ends

Carmel Community Character Report.doc

Page 2 ends

California Coastal Commission
policies. Thus, the Commission must continue to process demolition permits in such a way as to not significantly impact Carmel’s special community character.

As discussed below, there are several alternatives for doing so. Because of the rigor of the City’s local review process, and assuming no significant change in current demolition trends, it may be reasonable to continue to exercise best professional Commission staff judgment of individual cases approved by the City, but at a higher level of public scrutiny (i.e., public hearings on the Commission’s consent calendar for most cases, on the regular calendar if substantial issues of coastal resource protection are evident).

This approach may be adequate for addressing the mandate of Coastal Act Section 30253 to protect community character, at least for the limited time until the LCP is completed.

Another approach would entail a much more rigorous consideration of Coastal Act Section 30604(a), the section that requires that coastal development approvals not prejudice the preparation of an LCP. Such approach would entail Staff recommendations for denial on all projects that would significantly change such aspects of Carmel’s character as building scale and style, the native tree canopy, or potentially historical structures. While the recommendations would still depend on the facts of each case, the denial recommendations would be accompanied by recommended findings that the changes proposed by the applicant would – at least on a cumulative basis – prejudice the completion of an LCP that meets the community character protection goal of Coastal Act Section 30253.

Overview of LCP Status in Carmel
The City of Carmel-by-the-Sea is located entirely within the coastal zone but does not yet have a certified LCP. The Commission approved a Land Use Plan (LUP) and an Implementation Plan (IP) at different times in the early 1980s, but the Commission’s suggested modifications were not accepted by the City.

Thus, both the LUP and the IP remain uncertified. Ordinarily, this would mean that the Commission would assume the role for reviewing all development within the City for compliance with the Coastal Act.

However, in 1977 the Commission authorized a broad-ranging categorical exclusion within the City of Carmel (Categorical Exclusion E-77-13) that excludes from coastal permitting requirements most types of development not located along the beach and beach frontage of the City.

The City’s categorical exclusion was based primarily upon the belief that: (1) there was limited potential for additional development within City limits that would impact coastal resources, given that there were (and are) scarce few vacant parcels; and (2) the City’s rigorous review of development proposals would ensure that any so excluded development would be protective of coastal resources in Carmel.

Demolitions, though, which tend to raise more concern about the preservation of community character, were not excluded under the order.

The City is currently working on a new LCP submittal (both LUP and IP), funded in part by an LCP completion grant recently awarded by the Commission. The City has made progress on the LCP submittal and—as noted above--has indicated the Land Use Plan is expected to be submitted for Commission review in April 2001, with the Implementation Plan submittal expected by December 2001. However, until the Commission has certified the entire LCP submittal, the Commission retains coastal permitting authority over non-excluded development within the City.

ATTACHMENT 12

Page 500 of 569 ends

Carmel Community Character Report.doc

Page 3 ends

California Coastal Commission
Coastal Resources in the City of Carmel
The City of Carmel-by-the-Sea lies entirely within the coastal zone, and is home to a rich variety of coastal resources protected by the Coastal Act. These include the spectacular public beach and recreational amenities along the City’s frontage, the urban forest that uniquely identifies Carmel as the “Village in the Forest,” the substantial riparian and habitat areas (such as Mission Trails Nature Preserve and Pescadero Canyon), and the unique community and visual character of Carmel as exhibited by the style, scale, and rich history of its residential, commercial, and civic architecture. Taken as a whole, these resources combine to form the special character of Carmel – a significant coastal resource worthy of protection in its own right.

Applicable Coastal Act Community Character Policies
The Coastal Act requires that the special character of communities such as Carmel be protected. Sections 30253(5) and 30251 of the Act state:

Section 30253(5). New development shall where appropriate, protect special communities and neighborhoods which, because of their unique characteristics, are popular visitor destination points for recreational uses.

Section 30251. The scenic and visual qualities of coastal areas shall be considered and protected as a resource of public importance. Permitted development shall be sited and designed to protect views to and along the ocean and scenic coastal areas, to minimize the alteration of natural land forms, to be visually compatible with the character of surrounding areas, and, where feasible, to restore and enhance visual quality on visually degraded areas.

New development in highly scenic areas such as those designated in the California Coastline Preservation and Recreation Plan prepared by the Department of Parks and Recreation and by local government shall be subordinate to the character of its setting.

It is often stated that Carmel, along with such other special coastal communities as the town of Mendocino, is one of the special communities for which Coastal Act Section 30253(5) was written. Indeed, Carmel has been, and remains today, a spectacular coastal resource known the world over as an outstanding visitor destination as much for the character of its storied architecture, as for its renowned shopping area and white sand beach. In part, Carmel is made special by the character of development within City limits.

In particular, as a primarily residential community, the web of residential development in Carmel plays a key role in defining the special character of the City. Carmel is distinctly recognized for its many small, well-crafted cottages. These modest, sometimes quaint residences are associated with the era in which Carmel was known for its resident artists and writers, and functioned as a retreat for university professors and other notables. These little homes were nestled into the native Monterey pine/Coast live oak forest, on a grid of streets that was executed in a way that yielded to trees more than to engineering expediency. This was the context for Carmel’s community life and its built character.

ATTACHMENT 12

Page 501 of 569 ends

Carmel Community Character Report.doc

Page 4 ends

California Coastal Commission
Development in Carmel under the Coastal Act – A Growing Concern Over time, Carmel has been changing as its older housing and commercial stock makes way for new, usually larger in size and scale, developments. Based on the Commission’s permit tracking database, there have been almost 600 development applications reviewed by the Commission since 1973 in the Carmel area.1 The overwhelming majority of these involved residential development of one sort or another ranging from complete demolition and rebuild to small additions to existing structures. Of these 600 or so applications, roughly 5 were denied, 25 withdrawn, and about 20 are currently pending; the rest were approved. Unfortunately, due to potential data entry issues with the older data in the Commission’s database, this information over the last quarter century should be viewed as background contextual information to the issue only. In addition, due in part to the City’s categorical exclusion, it is not clear how many projects involving substantial remodel (but not complete demolition) have taken place since 1977 that would not be present in the Commission’s database. In any case, although the City was not able to determine numbers since 1973 with any degree of certainty, the City indicates that it processes far more remodels than demolitions.

In contrast, the Commission’s database for the period since 1990 is fairly robust. Although there may be a few projects that weren’t entered into the system, the database is a fairly accurate representation of coastal permit applications in Carmel since 1990. As such, the period since 1990 can provide a more meaningful sample for understanding the change issue in Carmel.

Since 1990, there have been 177 development proposals in Carmel. Of these, 145 projects (or over 80%) involve some form of demolition, rebuilding and/or substantial alteration of residential housing stock in Carmel. This comes out to roughly 13 such residentially related projects per year since 1990; nearly all of these have been approved. Other than the three year period from 1992 – 1994 when a total of 13 applications were received, the number of development proposals in Carmel has been fairly constant until 2000. However, in the year 2000 alone, the Commission has received 44 applications so far to date; a full quarter of all applications received by the Commission for development in Carmel in the last decade. Of these 44 applications received in the year 2000, 33 of these involve some form of demolition, rebuilding and/or substantial alteration of residential structures; 16 of the 33 have already been approved this year and 17 remain pending. More applications are arriving as this is written. Clearly the trend for demolition/rebuild/substantial remodel has been magnified in current years as demand for Carmel properties has outstripped the limited supply represented by the approximately 3,200 parcels within the City limits.

Although demolition of existing residential buildings in Carmel is not a recent phenomenon, a series of demolitions in the recent past, and a larger than usual influx of new applications, have engendered controversy over whether or not an existing house represents the historical, architectural, and environmental character of Carmel; and if a replacement house detracts from Carmel’s character because of a modern design, tree removal, proposed house size, or other characteristics. City planners now

1 There is some uncertainty with the data collection due to incomplete data collection and entry for earlier years of Commission permitting. Notwithstanding, there is a clear trend of residential demolition and redevelopment in the City of Carmel.

ATTACHMENT 12

Page 502 of 569 ends

Carmel Community Character Report.doc

Page 5 ends

California Coastal Commission
estimate that as much as one-third of the existing housing stock is comprised of “antiquated” structures, although not all older homes contribute anything in particular to the community’s “special character.” The demolition phenomenon impacts both those structures worth saving, and those that are not. Nonetheless, hundreds of worthy cottages remain. Some have historical credentials, and some – because of their architectural character and context – are contributing characters on the stage.

It is not clear to what extent the history of such demolition/rebuild/remodel has altered the special community character aesthetic of Carmel. A comprehensive cumulative impact assessment of such a trend has not been conducted to date, which would require considerable effort to review local development permitting files and actions. There is little doubt that structures within the City have generally been getting larger. However, up to now, and based on the City’s rigorous design review process as well as Commission staff’s best professional judgement, Commission staff has concluded that the City’s character would not be adversely affected (individually or cumulatively) by the demolitions proposed to date. As such, Commission staff has generally recommended approval (either through formal recommendations to the Commission, administrative permits, or through a determination that a waiver of coastal permit requirements was in order) for such proposed demolitions over the years.

At the Commission’s request, and in tandem with research by the City, Commission staff has looked anew at the issue of demolition/rebuilds in Carmel. Based on this analysis, staff cannot absolutely ensure that continuation of this interpretation will protect the special character of Carmel as required by the Coastal Act. Part of the reason for this is that although the elements that define the City’s character can be generally described (e.g. “Village in the forest”, architecture, beach area, etc.), it has not been determined how these elements interact to make Carmel special. In other words, Carmel’s community character has not yet been defined. The reason for this is because such a definition, as well as a means to adequately protect such character consistent with the Act, is best determined through a community and Commission review process culminating in a certified LCP. As previously described, although such a process is ongoing in Carmel, the LCP has not yet been completed.

Alternatives for Evaluation of Carmel Coastal Development until LCP Completion As discussed, the City of Carmel does not have a certified LCP. Nonetheless, most coastal development is excluded from permit review by the 1977 categorical exclusion. There is little doubt that the best alternative for addressing the Carmel community character concern is the completion of the LCP. The LCP planning process is the appropriate mechanism for defining and evaluating community character in Carmel. By community development of policies, standards, and development guidelines, and submission for Coastal Commission review, the policy goal of 30253 to protect community character can be resolved.

Staff also does not recommend that the categorical exclusion be removed or modified. Such an effort would take time and resources away from completion of the LCP, which should be given the highest priority in light of limited staff resources. In addition, the City has a well-developed local review process that to date has been understood to be protecting the coastal resources of concern in the excluded area.

More important, areas of Carmel where development might impact significant resources, such as along the shoreline, are not excluded. Finally, to the extent that any issues might be raised by the continued implementation of the exclusion, time and effort should be allocated to these issues through the ATTACHMENT 12

Page 503 of 569 ends

Carmel Community Character Report.doc

Page 6 ends

California Coastal Commission
development and completion of the LCP. (See Exhibit B for more detailed discussion of the categorical exclusion, provided by the City.)
In terms of the more specific issue of community character, the City is currently in the middle of a community planning process to determine, among other things, the basis for defining Carmel’s community character and ways to protect and preserve this character consistent with the Coastal Act. There is no question that the demolition of structures in the City if continued indefinitely would significantly change the City of Carmel. However, because community character has not yet been clearly defined, the effect of such change on Carmel’s character is unclear when evaluated against the policy objectives of the Coastal Act.

The Coastal Act provides guidance for such a situation. Section 30604(a) of the Coastal Act states Prior to certification of the local coastal program, a coastal development permit shall be issued if the issuing agency, or the commission on appeal, finds that the proposed development is in conformity with Chapter 3 (commencing with Section 30200) and that the permitted development will not prejudice the ability of the local government to prepare a local coastal program that is in conformity with Chapter 3 (commencing with Section 30200). A denial of a coastal development permit on grounds it would prejudice the ability of the local government to prepare a local coastal program that is in conformity with Chapter 3 (commencing with Section 30200) shall be accompanied by a specific finding which sets forth the basis for that conclusion. [emphasis added]
Given this Coastal Act requirement, how should non-excluded coastal development be processed by the Commission until completion of the LCP? As already mentioned, the best way to protect community character in Carmel is for the City to complete, and the Commission to certify, an LCP for Carmel. In terms of the Coastal Act, this has been and remains the ultimate and best solution to addressing community character concerns in Carmel. With that in mind, Commission staff seeks guidance with respect to the several alternative approaches that could be implemented by Staff until such time as a LCP has been certified for the City of Carmel. :

Option 1: Continue on a Best Professional Judgement Basis Pending LCP Completion Under this option, Commission staff would continue to bring forward recommendations on individual projects based on Staff’s best professional judgement as to whether the proposed project: (1) would adversely, on an individual and/or cumulative basis, impact the community character of the City of Carmel; (2) would adversely impact any other applicable coastal resources; and (3) would prejudice the City’s ability to prepare a LCP consistent with the Act. Based upon the facts of individual cases, staff would either recommend for approval or for denial. In terms of community character, staff would consider the variables described above (mass, scale, trees, history, architecture, etc.) in a way that relies heavily the City’s own findings to arrive at a recommendation. This method is akin to the process that staff has been using up to and including the October 2000 hearing. An example of this process is shown in Exhibit C, a typical staff report involving demolition in Carmel from the September hearing (which was approved as an administrative permit). Under this option, Commission staff would schedule any Carmel demolition ATTACHMENT 12

Page 504 of 569 ends

Carmel Community Character Report.doc

Page 7 ends

California Coastal Commission
applications for full public hearings, either on the regular or consent calendar as appropriate (i.e., there wouldn’t be any waivers and/or administrative permits for the typical residential demolitions in Carmel).

Under this method in the past, Commission staff has generally recommended approval (either through formal recommendations to the Commission or through a waiver of coastal permit requirements) for the vast majority of proposed demolitions in Carmel over the years. Part of the reason for this has been the City’s rigorous design review and forestry review processes. Together, these processes have for the most part resulted in replacement structures of a similar ilk to that which make up the basic fabric of the City.

Staff would be relying in large measure on this existing City review process and ordinances to address community character concerns. Under this approach, Staff would expect that the majority of proposed projects in Carmel in the future would continue to be recommended for approval. In fact, of the 17 applications involving residential demolition currently pending at the Commission level, 11 have been reviewed to the level that would allow for Staff to formulate a preliminary recommendation; of this subset, 9 would be recommended for approval (as submitted) under this method.

Implicit in this approach is the hypothesis, based on staff's best professional judgement to date, that the cumulative adverse effect on community character has been and will continue to be insignificant. In the event the Commission receives more than the approximately 3 demolition applications per month that it has been averaging most recently, it is not clear that the insignificant cumulative adverse effect hypothesis will remain supportable. In fact, one might expect that if the Commission were to pursue such a policy, a spike in demolition proposals may be generated in response to anticipated future limitations on demolition proposals imposed by the e Commission and/or the City. However, it is as difficult to predict such an effect with any degree of certainty as it is to predict the outcome of the City’s LCP planning process vis-àvis community character. In any event, each proposal would be evaluated based upon the relative facts of the case and a decision rendered.

Option 2: The “No Significant Character Changes Until LCP Completion” Approach Under this scenario, the Commission would strictly apply the "no prejudice" approach required by the Coastal Act by asking whether proposed development within Carmel would significantly change the status quo. The idea here is that if approved development does not unduly change what is present in Carmel now, then the as-yet-to-be-defined community character of Carmel would not unduly change either. In this way, any decision that the Commission would take would not lead to changed character and thus would not be expected to prejudice City efforts to come to grips with defining – and appropriately protecting – this character.

In order to objectively identify those proposals that would not result in significant change, a set of common sense, narrowly defined change criteria would be applied to applications received by the Commission. These change criteria would be based on a set of factors (including scale, trees, history, architectural style) known to contribute to the City’s special community character as follows:

Would the proposed project:
· Result in a 10% or greater increase in the gross square footage, height, or footprint (site coverage) from that which is currently present?
ATTACHMENT 12

Page 505 of 569 ends

Carmel Community Character Report.doc

Page 8 ends

California Coastal Commission
· Result in the removal of any significant (i.e., 6” or greater in diameter) native pine, willow, cypress, or oak trees? Or, even if no trees are removed, involve sufficient limb removal to be a significant loss of forest canopy?
· Modify a structure deemed to be a historic resource by the City, the State Office of Historic Preservation, or other public agency?
· Involve a structure greater than 50 years old for which the City has not performed a historic resource assessment?
· Not identify a City-approved replacement structure (i.e., speculative demolitions)? If the answer to any of the above change criteria is yes, the Staff recommendation would be for denial of the proposed project on the grounds that: community character has not yet been defined through the City LCP process; the project would change the character of the City to some degree; because community character remains undefined, the effect of such a project on Carmel’s character is unclear; that allowing such a project in the face of such uncertainty over its impact on such a special coastal resource would be imprudent, particularly since the City is well underway in the process of preparing their formal LCP submittal to the Commission; and, because the Commission cannot guarantee that such a project would protect the heretofore undefined community character resource, allowing such a project at this point would prejudice the City’s LCP planning process; accordingly, the finding required by Coastal Act Policy 30604(a) can not be made and the application must be denied.

Such a denial would be without prejudice to the proposed project inasmuch as it would be a procedural denial based on the need to protect the City’s ability to finish their LCP. This approach would recognize that these permit decisions have the potential—at least cumulatively if not individually--to undermine the potential options for developing and implementing protective policies. Once the City’s LCP is finished, and ultimately certified by the Commission, any such denied projects could be resubmitted for review by the City in accordance with the applicable LCP standards. Until that time, however, the staff would recommend that the Commission not approve such projects.

The only exception to such a rule would be in the case of existing structures that are not habitable and/or determined to be public safety hazards—and are clearly not capable of repair, rehabilitation, or other onsite reuse.

Under this scenario, Staff would expect that the majority of proposed demolition projects in Carmel would fail one or more of these tests and would be recommended for denial. In fact, of the 17 residential demolition applications currently pending and preliminarily reviewed by Commission staff, only 4 would be recommended for approval. Staff is not as clear about the range of currently excluded development that would likewise fail these tests. Until the LCP is certified, Staff would expect that, under this approach, demolition applications to the Commission would taper off as potential project proponents come to ATTACHMENT 12

Page 506 of 569 ends

Carmel Community Character Report.doc

Page 9 ends

California Coastal Commission
understand the Commission’s position on prejudicing the LCP and the objective, common sense criteria used to measure community character change.

In any case, staff would schedule any Carmel demolition applications for full public hearings on the regular calendar if the recommendation were to be for denial, and on either the regular or consent calendar if the recommendation is for approval.

Option 3: Other
There may be other approaches, including permutations of those above, that will address community character concerns in Carmel. These range from granting waivers to most of the demolition projects that have been through the City’s own design and forestry review processes (as staff did prior to September of this year), to even more rigorous approaches that set the bar at an even higher level. For example, additional “change factors” that could be considered are:
· Any demolition that would facilitate an increase in residential density (a common type of application is to demolish one house that straddles two parcels, to allow a replacement house on each parcel); · Demolition of any building on the Carmel Preservation Society’s historic structure inventory lists; and, · Any demolition that would facilitate replacement of traditional architecture style in favor of contemporary or modernistic styles (from the visitor’s perspective, rustic cottage and Craftsman styles are those most likely representative of Carmel’s architectural traditions).

Conclusion
The City of Carmel is a unique coastal jewel, for which the Coastal Act dictates protection of its special community character. This character is generally agreed to be shaped by the City’s spectacular public beach, the urban forest dominated by native Monterey pines, the substantial riparian habitat areas, and the unique visual character of Carmel as exhibited by the style, scale, and rich history of its residential, commercial, and civic architecture. However, the necessary standards and measures to protect this special character have not yet been clearly defined by the City’s LCP planning process nor certified by the Commission. Part of the reason for this is that Carmel’s character is not necessarily expressed by any one aspect, whether that be historical, architectural, environmental, or something else, but is rather a combination of several different aspects, all of which work together synergistically to create the unique ambiance of the City. The correct recipe for protecting this ambiance is not easily derived.

Because of this, the Commission finds itself in the difficult position of making judgements on what will, and what will not, adversely affect this special character of the City absent a certified LCP. Without a clear definition for Carmel’s community character established through the LCP, the question of what to be ATTACHMENT 12

Page 507 of 569 ends

Carmel Community Character Report.doc

Page 10 ends

California Coastal Commission
done in the interim to both protect such character and not prejudice the City’s LCP efforts, remains unresolved.

It appears that the Commission has two basic options, with potentially multiple permutations, for approaching this question. As discussed above, these polarities are the ‘no changes’ option (deny all projects that would significantly alter the character of any particular lot), and the ‘best professional judgement’ option (trust but verify the City’s existing review processes). Staff believes there are valid reasons to support either of these options. Therefore, Staff is asking for guidance from the Commission as to how to proceed.

Upon direction from the Commission, staff will implement whichever approach is agreed upon by the Commission and will bring forward the approximately 17 pending applications as soon as possible. It appears that at least 9 of the applications (including the 6 continued from September) would be scheduled for the December hearing in San Francisco.

Exhibits
Exhibit A: City of Carmel-by-the-Sea location
Exhibit B: City of Carmel-by-the-Sea Response to Issues Raised at the October Commission Hearing Exhibit C: Example of Staff Methodology – Administrative Permit 3-00-095 (Clendon) ATTACHMENT 12

Page 508 of 569 ends

CALIFORNIA DEPARTMENT OF HOUSING AND COMMUNITY

DEVELOPMENT

ACCESSORY DWELLING UNIT

HANDBOOK
March 2026
ATTACHMENT 13

Page 509 of 569 ends

2 Table of Contents
ADUs in California ................................................................................................................. 4 The California Department of Housing and Community Development............................. 5 Glossary ................................................................................................................................. 6 Summary of Recent Changes to ADU Law ........................................................................ 10 Frequently Asked Questions .............................................................................................. 16 66323 Units ...................................................................................................................... 16 ADUs ................................................................................................................................ 19 Bedrooms ......................................................................................................................... 19 Building Code Violations................................................................................................... 20 Certificate of Occupancy................................................................................................... 20 Coastal Commission......................................................................................................... 20 Deed Restrictions ............................................................................................................. 21 Fees ................................................................................................................................. 22 Fire Protection and Fire Sprinkler Requirements................................................................ 23 Funding............................................................................................................................. 23 Height Requirements ........................................................................................................ 24 Homeowners Associations (HOAs) .................................................................................. 25 Housing Elements and Prohousing Designation............................................................... 26 JADUs .............................................................................................................................. 28 Local ADU Ordinances and Local Agencies..................................................................... 29 Manufactured Homes ....................................................................................................... 30 Mobilehome Parks............................................................................................................ 31 Multifamily ADUs .............................................................................................................. 31 Nonconforming Zoning ..................................................................................................... 32 Owner-Occupancy ............................................................................................................ 32 Parking Requirements ...................................................................................................... 33 Permit Applications and Permitting Agencies ................................................................... 34 Rental Terms.................................................................................................................... 36 Sales and Separate Conveyance ..................................................................................... 36 Senate Bill 9 (SB 9) (Chapter 162, Statutes of 2021) ....................................................... 36 Setbacks ........................................................................................................................... 37 Size Requirements and Restrictions................................................................................. 38 ATTACHMENT 13

Page 510 of 569 ends

3 Solar Requirements.......................................................................................................... 39 Tiny Homes ...................................................................................................................... 39 Types of ADUs ................................................................................................................. 40 Unpermitted Structures and ADUs ................................................................................... 41 Utilities.............................................................................................................................. 41 Zoning, Development, and Other Standards .................................................................... 42 Resources............................................................................................................................. 45 Changes to State ADU Laws............................................................................................ 45 AB 2533 ...................................................................................................................... 47 SB 1211 ...................................................................................................................... 48 SB 477 ........................................................................................................................ 48 AB 976 and AB 1033................................................................................................... 50 AB 1332 ...................................................................................................................... 50 AB 434 ........................................................................................................................ 51 AB 345 ........................................................................................................................ 51 AB 3182 ...................................................................................................................... 51 AB 68, AB 881, and SB 13.......................................................................................... 52 AB 587, AB 670, and AB 671...................................................................................... 53 Summary Table of Statutory Changes.............................................................................. 54 ATTACHMENT 13

Page 511 of 569 ends

4 ADUs in California
Accessory Dwelling Units (ADUs) and Junior Accessory Dwelling Units (JADUs) are innovative and effective options for adding much needed housing in California. Since 2016, State ADU Laws have continued to evolve to further lower barriers to the development of more affordable housing as the Legislature works to address the housing crisis across the state. As these laws change, HCD’s goal is to ensure consistency and clarity in the application of these laws through education, technical assistance, and enforcement.1 Benefits of ADUs
ADUs provide a wide range of benefits, including:
• ADUs are an affordable type of home to construct in California because they do not require paying for land, major new infrastructure, structured parking, or elevators. • ADUs can provide a source of income for homeowners.
• ADUs are often built with cost-effective wood frame construction, which is significantly less costly than homes in new multifamily infill buildings. • ADUs allow extended families to be near one another while maintaining privacy. • ADUs can provide as much living space as many newly built apartments and condominiums, and they’re suited well for individuals, couples, small families, friends, young people, and older adults.
• ADUs give homeowners the flexibility to share independent living areas with family members and others, allowing older adults to age in place.

Indeed, Californians are increasingly recognizing the benefits of ADUs, and ADUs are making a difference. Between 2016-2024, the number of ADUs permitted annually in the state grew from 1,336 to 30,354, a 20-fold increase. In 2024, ADUs comprised more than 26.6 percent of all homes permitted statewide.

ADUs as an Infill Development Strategy
ADUs are, by definition, created in areas that are already developed but where land may be underutilized. Moreover, restrictions on parking requirements for ADUs that are located near transit create further incentives to build ADUs, particularly in places that provide easy access to jobs and other amenities, further reducing reliance on vehicles.

As a result, ADU construction is a key infill development strategy that contributes to, among other things, reducing greenhouse gas emissions and improving air quality by reducing the distance people need to travel; reducing conversion of agricultural land, sensitive habitat, and open space for new development; reducing costs to build and maintain expensive infrastructure; and facilitating healthy and environmentally friendly active transportation.

In light of changing laws around ADUs and the growing importance of this housing type, HCD has updated this ADU Handbook and continues to be committed to facilitating housing production at all income levels.
1 This updated ADU Handbook references the law as amended by recent legislation that went into effect on January 1, 2026.

ATTACHMENT 13

Page 512 of 569 ends

5 The California Department of Housing and
Community Development
With the vision that one day, every California resident can live, work, and play in healthy communities of opportunity, it is the mission of HCD to provide safe, affordable homes and vibrant, inclusive, sustainable communities for all Californians. HCD accomplishes this by increasing and preserving the supply of affordable places to live in California and by creating effective solutions to the housing crisis through policy and research.

Housing Accountability Unit
California’s housing crisis has reached historic proportions despite the passage of numerous laws intended to increase the supply of housing affordable to Californians at all income levels.

As part of the 2021-2022 state budget, HCD received additional staff to grow its accountability efforts and formed the Housing Accountability Unit (HAU). While education and technical assistance are always the first step in HCD’s accountability efforts, the HAU holds jurisdictions accountable for meeting their housing element commitments and complying with state housing laws. Violations of state housing laws, including State ADU Law, may lead to consequences, including revocation of housing element certification and referral to the California Office of the Attorney General.

Technical Assistance
There may be uncertainty, or a need for education at the local level about how to comply with state law, especially as state laws evolve. HCD provides technical assistance to property owners and developers who are seeking to create ADUs, as well as to advocates, local agencies, and other interested parties.

Any questions regarding the application of State ADU Law may be submitted to HCD via the online ADU Portal. Please provide as much detail as possible in the online form. HCD may request additional information, including, but not limited to denials and communications from the local agency.

Local agencies seeking assistance or submitting an ADU ordinance to HCD, must also use the online portal.

For questions beyond what this Handbook provides, stakeholders are encouraged to contact their local permitting agency (e.g., city or county) or private attorney.

Enforcement of State ADU Law
Since 2016, HCD has had statutory authority to review local agencies’ ADU ordinances, and as of January 1, 2024, HCD also has the authority to enforce all State ADU Laws.

HCD’s ADU team reviews local ordinances for compliance with State ADU Law and sends findings letters and, when necessary, may escalate its enforcement. To ensure consistency, the HAU works closely with other HCD divisions.

The ADU team is committed to supporting the public, local agencies, and partner agencies with understanding and complying with State ADU Law.

ATTACHMENT 13

Page 513 of 569 ends

6 Glossary
66323 Units
One of the four delineated types of ADUs (and JADUs) that must be permitted pursuant to Government Code section 66323. Source: Government Code section 66323 Accessory Dwelling Unit (ADU)
An attached or a detached residential dwelling unit that provides complete, independent living facilities for one or more persons, and is located on a lot with a proposed or existing primary residence. It shall include permanent provisions for living, sleeping, eating, cooking, and sanitation on the same parcel as the single-family or multifamily dwelling is, or will be, situated.

An ADU also includes the following:
(A) An efficiency unit.
(B) A manufactured home, as defined in Section 18007 of the Health and Safety Code.

Source: Government Code section 66313, subdivision (a)
Accessory Structure
A structure that is accessory and incidental to a dwelling located on the same lot. Source:

Government Code section 66313, subdivision (b)
Applicant
The person or party responsible for the submittal of an application seeking a permit.

Application
A formal request to perform work, which includes all information as required.

Certificate of Occupancy
A document issued by local California Building and Safety departments which certifies that a commercial space or newly constructed residential building has been inspected for compliance with the California Building Standards Code and local ordinances which govern construction and occupancy. Source: 2025 California Residential Code section R110 Common Interest Development
Any of the following:
(a) A community apartment project.
(b) A condominium project.
(c) A planned development.
(d) A stock cooperative.

Source: Civil Code section 4100
Covenants, Conditions, and Restrictions (CC&Rs)
A set of rules governing the use of a certain piece of real estate in each community. “Governing documents” includes declarations, bylaws, operating rules, articles of incorporation, or articles of association, which govern the operation of the common interest development or association. Source: Civil Code section 4150 ATTACHMENT 13

Page 514 of 569 ends

7 Efficiency Dwelling Unit
A dwelling unit which contains a minimum of 190 square feet in living space, a separate closet, kitchen sink, cooking appliance, refrigerator, and a separate bathroom containing a water closet, lavatory, bathtub, or shower. Source: Government Code section 66313, subdivision (a)(1); 2025 California Building Code section 1208.4 Habitable Space
A space in a building for living, sleeping, eating, or cooking. Bathrooms, toilet rooms, closets, halls, storage or utility spaces and similar areas are not considered habitable spaces. Source: 2025 California Building Code section 202.

High Quality Transit Corridor
A corridor with fixed route bus service with service intervals no longer than 15 minutes during peak commute hours. Source: Public Resources Code section 21155, subdivision (b)
Impact Fee
“Impact fee” has the same meaning as the term “fee” as defined in subdivision (b) of Section 66000, and includes the fees specified in Section 66477. “Impact fee” does not include any connection fee or capacity charge charged by a local agency, special district, or water corporation. Source: Government Code section 66311.5, subdivision (c)(2) Interior Livable Space
A space in a dwelling intended for human habitation, including living, sleeping, eating, cooking, or sanitation. Livable space includes bedrooms, bathrooms, kitchens, laundry rooms, closets, and interior stairs. Source: Government Code section 66313, subdivision (e) Junior Accessory Dwelling Unit (JADU)
A unit that is no more than 500 square feet in interior livable space and contained entirely within a single-family residence. A JADU may include separate sanitation facilities or may share sanitation facilities with the existing structure. Source: Government Code section 66313, subdivision (d)
Living Area
The interior habitable area of a dwelling unit, including basements and attics, but does not include a garage or any accessory structure. Source: Government Code section 66313, subdivision (f)
Local Agency
A city, county, or city and county, whether general law or chartered. Source: Government Code section 66313, subdivision (g)
Major Transit Stop
A site containing any of the following:
(a) An existing rail or bus rapid transit station.
(b) A ferry terminal served by either a bus or rail transit service. (c) The intersection of two or more major bus routes with a frequency of service interval of 20 minutes or less during the morning and afternoon peak commute periods.

Source: Public Resources Code section 21064.3
ATTACHMENT 13

Page 515 of 569 ends

8 Manufactured Home
A structure that was constructed on or after June 15, 1976, is transportable in one or more sections, is eight body feet or more in width, or 40 body feet or more in length, in the traveling mode, or, when erected on site, is 320 or more square feet, is built on a permanent chassis and designed to be used as a single-family dwelling with or without a foundation when connected to the required utilities, and includes the plumbing, heating, air conditioning, and electrical systems contained therein. Source: Health and Safety Code section 18007, subdivision (a)
Ministerial Approval
Considered and approved without discretionary review or a hearing. Source: Government Code section 66317, subdivision (a)
Multifamily Dwelling
For the purposes of State ADU Law, a structure with two or more attached dwelling units on a single lot is considered a multifamily dwelling structure. Multiple detached single-family dwelling units on the same lot are not considered multifamily dwelling units for the purposes of State ADU Law. Please note, this does not affect the number of units allowable under Government Code section 66323, subdivision (a)(4), which allows ADUs on a lot with a multifamily dwelling structure, but requires the ADUs to be detached from the multifamily dwelling structure, not within the multifamily dwelling structure.

Nonconforming Zoning Condition
A physical improvement on a property that does not conform with current zoning standards.

Source: Government Code section 66313, subdivision (h)
Objective Standards
Standards that involve no personal or subjective judgment by a public official and are uniformly verifiable by reference to an external and uniform benchmark or criterion available and knowable by both the applicant or proponent and the public official prior to submittal.

Source: Government Code section 66313, subdivision (i)
Passageway
A pathway that is unobstructed, clear to the sky, and extends from a street to one entrance of the ADU. Source: Government Code section 66313, subdivision (j) Permitting Agency
Any entity that is involved in the review of a permit for an ADU or JADU, and for which there is no substitute, including, but not limited to, applicable planning departments, building departments, utilities, and special districts. Source: Government Code section 66313, subdivision (k)
Planned Development
A real property development other than a community apartment project, a condominium project, or a stock cooperative, having either or both of the following features:
(a) Common area that is owned either by an association or in common by the owners of the separate interests who possess appurtenant rights to the beneficial use and enjoyment of the common area.

ATTACHMENT 13

Page 516 of 569 ends

9 (b) Common area and an association that maintains the common area with the power to levy assessments that may become a lien upon the separate interests in accordance with Article 2 (commencing with Section 5650) of Chapter 8. Source:

Civil Code section 4175
Proposed Dwelling
A dwelling that is the subject of a permit application and meets the requirements for permitting. Source: Government Code section 66313, subdivision (l) Public Transit
A location, including, but not limited to, a bus stop or train station, where the public may access buses, trains, subways, and other forms of transportation that charge set fares, run on fixed routes, and are available to the public. Source: Government Code section 66313, subdivision (m)
Qualified Buyer
Persons and families of low or moderate income, as defined in Section 50093 of the Health and Safety Code. Source: Government Code section 66340, subdivision (a); Health and Safety Code section 50093
Qualified Nonprofit Corporation
A nonprofit corporation organized pursuant to Section 501(c)(3) of the Internal Revenue Code that has received a welfare exemption under Section 214.15 of the Revenue and Taxation Code for properties intended to be sold to low-income families who participate in a special no-interest loan program. Source: Government Code section 66340, subdivision (b) Reasonable Restrictions
Restrictions that do not unreasonably increase the cost to construct, effectively prohibit the construction of, or extinguish the ability to otherwise construct, an ADU or JADU.

Reasonable restrictions shall not include any fees or other financial requirements. Source:

Civil Code section 4751, subdivision (b), and Civil Code section 714.3, subdivision (b) Single-Family Dwelling
For the purposes of State ADU Law, a single-family dwelling is a single unit providing complete, independent living facilities for one family, including permanent provisions for living, sleeping, eating, cooking, and sanitation, and existing as a separate interest of real property, such as a detached single-family dwelling or a townhouse.

Substandard Building
Any building or portion thereof, or premises on which the building is located, in which there exists any of a long list of conditions that endanger the life, limb, health, property, safety, or welfare of the public or occupants thereof. Source: Health and Safety Code section 17920.3
Tandem Parking
Two or more automobiles that are parked on a driveway or in any other location on a lot, lined up behind one another. Source: Government Code section 66313, subdivision (n) ATTACHMENT 13

Page 517 of 569 ends

10 Summary of Recent Changes to ADU Law
In Government Code section 66310,
subdivision (d), the California Legislature
declared that allowing ADUs in zones
that allow single-family and multifamily
uses provides additional rental housing
and is an essential component in
addressing California’s housing needs.

Over the years, State ADU Law has been
revised to improve its effectiveness in
creating more housing units. Major
changes to State ADU Law between
2023 and 2026 further reduced barriers
to the development of ADUs and JADUs.

Within this context, HCD developed –
and continues to update – this Handbook
to assist local governments, homeowners, attorneys, architects, and the public in understanding and applying the requirements of state law. Below is a summary of recent legislation that amended State ADU Law.

Please visit https://leginfo.legislature.ca.gov for the complete statutory changes.

All local permitting agencies and interested parties should review the amendments to California law, effective between 2023 and 2026, regarding the creation of ADUs and JADUs. 2022 legislation includes the following changes to State ADU Law (effective January 1, 2023):

Assembly Bill (AB) 2221 (Chapter 650, Statutes of 2022, Section 1) and Senate Bill (SB) 897 (Chapter 664, Statutes of 2022, Sections 2.5, 4, 5, and 6) built upon recent changes to State ADU and JADU Law and further addressed barriers to the development of ADUs and JADUs.

Due to SB 897 being chaptered after AB 2221, section 2.5 of SB 897 incorporated amendments to ADU Law proposed by both SB 897 and AB 2221. • Objective Standards. Requires local agencies to only impose objective standards on ADUs, which “involve no personal or subjective judgment by a public official and are uniformly verifiable by reference to an external and uniform benchmark or criterion available and knowable by both the development applicant or proponent and the public official prior to submittal” of an ADU permit application. (Gov. Code, § 66313, subd. (i). See also Gov. Code, §§ 66314, subd. (b)(1); 66323, subd. (g).) • Detached Garages. Allows ADUs detached from the proposed or existing primary dwelling, including in detached garages (Gov. Code, § 66314, subd. (d)(3)). • Occupancy Change. Provides that the construction of an ADU does not constitute a Group R occupancy change under the local building code, unless the local agency makes a written finding based on substantial evidence in the record that the construction of the ADU could have a specific, adverse impact on public health and safety (Gov. Code, § 66314, subd. (d)(8)).
• Fire Sprinklers. Precludes ADU construction from triggering a requirement that fire sprinklers be installed in the existing primary dwelling (Gov. Code, § 66314, subd. (d)(12)).

ATTACHMENT 13

Page 518 of 569 ends

11 • Permitting Process. Requires a permitting agency to either approve or deny (replacing the former language “act on”) an application to create or serve an ADU or JADU within 60 days from when a completed application is received, if there is an existing single-family or multifamily dwelling on the lot (Gov. Code, §§ 66317, subd. (a)(3); 66335, subd. (a)(3)). • Concurrent Permitting. Clarifies that permitting agencies may concurrently approve or deny a proposed ADU and new single-family or multifamily dwelling when submitted simultaneously for permitting. The application for the ADU shall be considered without discretionary review or hearing. Clarifies that permitting agencies may concurrently approve or deny a proposed JADU and new single-family dwelling when submitted simultaneously for permitting. (Gov. Code, §§ 66317, subd. (a)(3); 66335, subd. (a)(3).) • Permitting Agency Denials. Obligates a permitting agency, when it denies an ADU or JADU application, to “return in writing a full set of comments to the applicant with a list of items that are defective or deficient, and a description of how the application can be remedied by the applicant” within 60 days from when a completed application is received. (Gov. Code, §§ 66317, subd. (b); 66335, subd. (b).)
• Demolition Permits. Adds a requirement for a local agency to review and issue a demolition permit for “a detached garage that is to be replaced with an ADU” at the same time it reviews, and issues permits for, the ADU construction. (Gov. Code, § 66314, subd. (e).) Also prohibits permitting agencies requiring applicants to “provide written notice or post a placard for the demolition of a detached garage ... unless the property is located within an architecturally and historically significant district.” (Gov. Code, § 66314, subd. (f).) • Zoning & Setbacks. Prohibits a local agency from requiring “a zoning clearance or separate zoning review or any other minimum or maximum size for an accessory dwelling unit, size based upon a percentage of the proposed or existing primary dwelling, or limits on lot coverage, floor area ratio, open space, front setbacks, and minimum lot size, for either attached or detached dwellings that does not permit at least an 800 square foot accessory dwelling unit with four-foot side and rear yard setbacks to be constructed in compliance with all other local development standards.” (Gov. Code, § 66321, subd. (b)(3).) • Detached ADU Height Allowances. Establishes a base height limitation of 16 feet for detached ADUs (Gov. Code, § 66321, subd. (b)(4)(A)). Increases the maximum height limitation on a detached ADU to 18 feet if the ADU is “either within a half-mile walking distance of a major transit stop or a high-quality transit corridor” and provides for an additional two feet for roof pitch to align with the roof pitch of the primary dwelling unit.” (Gov. Code, §§ 66321, subd. (b)(4)(B); 66323, subd. (a)(2)(B).) Increases the height to 18 feet for a detached ADU that is “on a lot with an existing or proposed multifamily, multistory dwelling.” (Gov. Code, § 66321, subd. (b)(4)(B).)
• Attached ADU Height Allowances. Establishes the maximum height limitation that may be imposed by a local agency on an attached ADU to 25 feet, or the existing primary dwelling height limit if lower than 25 feet. Does not require a local agency to allow an ADU to exceed two stories (Gov. Code, § 66321, subd. (b)(4)(D)). • Parking Requirements. Prohibits local agencies from imposing parking in a number of specific circumstances (Gov. Code, § 66322, subd. (a)).

ATTACHMENT 13

Page 519 of 569 ends

12 • Zoning Nonconformance & Building Code Violations. Prohibits local agencies from denying an ADU permit due to the correction of “nonconforming zoning conditions, building code violations, or unpermitted structures that do not present a threat to public health and safety and are not affected by the construction of the accessory dwelling unit.” (Gov. Code, § 66322, subd. (b).) The prohibition was also added to Government Code section 66336 to apply to JADUs.
• Multifamily Dwellings. Prohibits a permitting agency from requiring “any modification of the existing multifamily dwelling as a condition of approving the application to construct an accessory dwelling unit” if the existing multifamily dwelling has “a rear or side setback of less than four feet...” (Gov. Code, § 66323, subd. (a)(4)(B)). • Permitting Agency Definition. Adds definition of a permitting agency as “any entity that is involved in the review of a permit for an accessory dwelling unit or junior accessory dwelling unit and for which there is no substitute, including, but not limited to, applicable planning departments, building departments, utilities, and special districts.” (Gov. Code, § 66313, subd. (k).)
• Unpermitted ADUs. Precludes a local agency from denying a permit for an unpermitted ADU that was constructed before January 1, 2018, because the ADU violates building standards or because the ADU does not comply with State ADU Law or a local ordinance. (Gov. Code, § 66311.7, subd. (a).) This prohibition does not apply if the local agency makes a finding that “correcting the violation is necessary to protect the health and safety of the public or occupants of the structure” (Gov. Code, § 66311.7, subd. (b)) or to a building that is deemed substandard pursuant to Health and Safety Code section 17920.3 (Gov. Code, § 66311.7, subd. (c)).
• Enclosed Uses. Considers enclosed uses within the residence, such as attached garages, to be “a part of the proposed or existing single-family residence” for the purposes of JADUs (Gov. Code, § 66333, subd. (d)).
• JADU Separate Entrance. Requires a JADU without a separate bathroom to “include a separate entrance from the main entrance to the proposed JADU, with an interior entry to the main living area.” (Gov. Code, § 66333, subd. (e)(2).) 2023 legislation includes the following changes to State ADU Law (effective January 1, 2024):

AB 976 (Chapter 751, Statutes of 2023) and AB 1033 (Chapter 752, Statutes of 2023) made changes to State ADU Law. AB 1332 (Chapter 759, Statutes of 2023) added Government Code section 65852.27 to expedite the approval of ADUs. AB 434 (Chapter 740, Statutes of 2023) modified Government Code section 65585 to require enforcement of State ADU Law, the legalization of unpermitted ADUs, and lot split / duplex laws, among others. • Owner Occupancy. Removes the existing 2025 sunset of the prohibition on owneroccupancy requirements and instead mandates no owner-occupancy requirement for ADUs (Gov. Code, § 66315). Authorizes a local agency to adopt a local ordinance to allow the separate conveyance of the primary dwelling unit and ADU(s) as condominiums (Gov.

Code, § 66342).

ATTACHMENT 13

Page 520 of 569 ends

13 • Pre-Approved ADU Plans. Requires the local agency to develop a program for the preapproval of ADU plans by January 1, 2025. The local agency shall accept ADU plan submissions for preapproval from any party and shall approve or deny applications pursuant to standards established in Government Code sections 66314-66331. The local agency shall post preapproved ADU plans and the contact information of the applicant on the local agency’s website. The local agency may also post plans pre-approved by other local or state agencies. (Gov. Code, § 65852.27.)
• Enforcement Authority. Amends Government Code section 65585, subdivision (j), by adding to the list of laws about which HCD is authorized to notify a local jurisdiction or the Attorney General when the local jurisdiction fails to comply with those laws, including Chapter 13 (commencing with Section 66310) and Government Code sections 65852.21, 65852.24, 65852.28, 65913.4.5, and 66411.7, among others. 2024 legislation includes the following changes to State ADU Law (effective March 27, 2024, and January 1, 2025):

SB 477 (Chapter 7, Statutes of 2024) made changes to the numbering of the government code sections related to ADU and JADU Law. AB 2533 (Chapter 834, Statutes of 2024) and SB 1211 (Chapter 296, Statutes of 2024) made changes to State ADU Law. • Updated Government Code Sections. Government Code sections related to ADU and JADU law were updated from 65852.2, 65852.22, 65852.23, and 65852.26 to Government Code sections 66310-66342.
• Unpermitted ADUs and JADUs. Changes the date from January 1, 2018, to January 1, 2020, such that a local agency is precluded from denying a permit for an unpermitted ADU that was constructed before January 1, 2020, because the ADU violates building standards or because the ADU does not comply with State ADU Law or a local ordinance. (Gov.

Code, § 66311.7, subd. (a).) A local agency shall inform the public about the provisions of this section through public information resources, including permit checklists and the local agency’s internet website, which shall include both of the following: (1) a checklist of the conditions specified in Section 17920.3 of the Health and Safety Code that would deem a building substandard, and (2) information that, before applying for a permit, the homeowner may obtain a confidential third-party code inspection from a licensed contractor to determine the unit’s existing condition or potential scope of building improvements before applying for a permit. (Gov. Code, § 66311.7, subd. (d)(1), (d)(2).) • Objective Standards. Prohibits a local agency from imposing any objective development standards on 66323 Units that are not authorized by the provisions of Government Code section 66323, subdivision (a).
• Livable Space. Defines “livable space” as a space in a dwelling intended for human habitation, as the term appears in Government Code sections 66313, subdivision (e), and 66323, subdivision (a)(3)(A).
• Uncovered Parking. Specifies that uncovered, off-street parking spaces demolished in conjunction with the construction of an ADU do not need to be replaced. • Detached ADUs. Authorizes up to eight detached ADUs on a lot with an existing multifamily dwelling, provided that the number of ADUs does not exceed the number of existing units on the lot.

ATTACHMENT 13

Page 521 of 569 ends

14 2025 legislation includes the following changes to State ADU Law (effective June 30, 2025, October 10, 2025, and January 1, 2026):

AB 1154 (Chapter 507, Statutes of 2025), SB 9 (Chapter 510, Statutes of 2025), SB 543 (Chapter 520, Statutes of 2025), AB 462 (Chapter 491, Statutes of 2025), and AB 130 (Chapter 22, Statutes of 2025) made various changes to State ADU Law. • Updated and Added Government Code Sections. Government Code sections related to ADU and JADU Law were updated from 66324, 66327, and 66332 to sections 66311.5, 66313.5, and 66311.7, respectively. Additionally, Government Code section 66333.5 was added.
• JADU Owner Occupancy. Clarified that if a JADU has shared sanitation facilities with the primary structure, owner-occupancy will be required. If the JADU does not have shared sanitation facilities, owner occupancy will not be required (Gov. Code, § 66333, subd. (b)). Additionally, made changes that stipulate JADUs can no longer be used as short-term rentals and, if rented, must now be rented for longer than 30 days (Gov.

Code, § 66333, subd. (g)).
• Local Ordinance Requirements. Clarified that if a local agency fails to submit an adopted ADU ordinance to HCD within the 60-day timeline or fails to respond to HCD’s findings regarding its ordinance within the 30-day timeline, that ordinance is null and void and the local agency must only apply State ADU Law when permitting ADUs (Gov.

Code, § 66326, subd. (d)). Additionally, section 66333.5 was added, which specifies that if a local agency fails to submit an adopted JADU ordinance to HCD within the 60- day timeline or fails to respond to HCD’s findings regarding their ordinance within the 30-day timeline, that ordinance is null and void and the local agency must only apply State ADU Law when processing applications for JADUs.
• Application Requirements. Required a permitting agency to determine whether an application for an ADU or JADU is complete and provide written notice of the determination no later than 15 business days after the permitting agency received the application (Gov. Code, § 66317, subd. (a)(2)(A)). If an application is determined to be incomplete, the permitting agency must provide the applicant with a list of incomplete items and a description of how the application can be made complete in the written notice (Gov. Code, § 66317, subd. (a)(2)(B)). If a permit application is determined to be incomplete or is denied, the permitting agency must provide a process for an applicant to appeal the incompleteness determination or denial and the permitting agency must provide a final written determination no later than 60 business days after receipt of the written appeal (Gov. Code, § 66317, subd. (d)(1)).
• Applications in the Coastal Zone. Clarified application processing when in the coastal zone by requiring a local government or the Coastal Commission, as specified, to either approve or deny a coastal development permit application for an ADU within 60 days of receiving a completed application (Gov. Code, § 66329, subd. (a)). • Size Limitations. Revised size limitations to be based on the square footage of interior living space of an ADU or JADU (Gov. Code, §§ 66321, subds. (b)(2) and (b)(3); 66313, subd. (d)).

ATTACHMENT 13

Page 522 of 569 ends

15 • Fees. Specified that an ADU or JADU that contains less than 500 square feet of interior livable space does not increase assessable space. Revised the limitations on impact fees to prohibit impact fees on the development of an ADU that has 750 square feet of interior livable space or less or a JADU that has 500 square feet of interior livable space or less, and to require that any impact fee on an ADU that has more than 750 square feet of interior livable space be charged proportionately in relation to the square footage of the primary dwelling unit (Gov. Code, § 66311.5, subd. (c)). • Expanded HCD Authority. Expanded HCD’s authority over Chapter 13 of Division 1 of Title 7 of the Government Code, to review, adopt, amend, or repeal guidelines to additionally grant that authority with respect to terms, references, and standards for JADUs (Gov. Code, § 66313.5).
• JADUs and Fire Sprinklers. Clarifies that fire sprinklers are not required for a JADU if the primary residence does not have fire sprinklers and that the addition of a JADU cannot trigger the requirement for fire sprinklers (Gov. Code, § 66323, subd. (d)). • Unit Combinations. Specifies the number of allowable ADUs described under Government Code section 66323 per lot (Gov. Code, § 66323, subd. (a)). • Certificate of Occupancy. Requires a local agency to issue a certificate of occupancy for an ADU constructed in a county that is subject to a proclamation of a state of emergency made by the Governor on or after February 1, 2025, even if the primary dwelling has not yet been issued a certificate of occupancy, if certain requirements are met, including that the primary dwelling was substantially damaged or destroyed by an event referenced in the state of emergency proclamation (Gov. Code, § 66328). • Reasonable Restrictions. Specifies that reasonable restrictions in covenants, restrictions, and conditions, as described in the Civil Code, shall not include any fees or other financial requirements (Civil Code, § 714.3, subd. (b)). • Objective Standards. Removes Government Code section 66323, subdivision (g), which allowed the imposition of objective standards on ADUs in multifamily dwelling structures if the local agency had adopted an ADU ordinance by July 1, 2018.

For additional summaries of ADU legislation, please see the Resources section.

ATTACHMENT 13

Page 523 of 569 ends

16 Frequently Asked Questions
66323 Units
What are “66323 Units”?
HCD uses the term “66323 Units” to refer to ADUs and JADUs that are created pursuant to Government Code section 66323. They have also been referred to as “State mandated” or “State exempt” ADUs. Government Code section 66323 creates four categories of ADUs (and JADUs) that must be approved ministerially and are only subject to standards set forth in Government Code section 66323. (Gov. Code, § 66323, subd. (b).) For example, 66323 Units do not have to comply with lot coverage, front setbacks, and design standards. However, these ADUs must comply with building code and health and safety requirements for dwellings. The four categories are:

1. Single-Family Converted ADUs and JADUs
One ADU per lot is permitted within the converted space of a proposed or existing single-family dwelling or accessory structure. This type of ADU must have exterior access and setbacks for fire and safety but is not subject to a four-foot side and rear yard setback. (Gov. Code, § 66323, subd. (a)(1).)
ADUs converted from accessory structures are eligible for a 150 square-foot expansion to accommodate ingress and egress. For example, if a second story from a singlefamily dwelling is converted into an ADU, a stairwell of not more than 150 square feet could be added, among other types of ingress and egress configurations that comply with the local building standards. (Gov. Code, § 66323, subd. (a)(1)(A).) In addition, one JADU per lot is permitted within the proposed or existing space of a single-family dwelling or accessory structure and must have exterior access, side and rear setbacks for fire and safety. (Gov. Code, § 66323, subd. (a)(1).) JADUs must also comply with the provisions of JADU Law found in Government Code sections 66333- 66339. For the purposes of constructing a JADU, attached garages are part of a singlefamily dwelling. (Gov. Code, § 66333, subd. (d).) For more information, please see the Handbook section on JADUs.

2. Single-Family Detached ADUs
One detached new construction ADU that does not exceed four-foot side and rear yard setbacks is permitted on lots with an existing or proposed single-family dwelling (Gov.

Code, § 66323, subd. (a)(2)). The maximum unit size is 800 square feet with a height limitation of 16, 18, or 20 feet depending on conditions specified in Government Code section 66321, subdivision (b)(4). (Gov. Code, § 66323, subd. (a)(2)(B).) ATTACHMENT 13

Page 524 of 569 ends

17 3. Multifamily Converted ADUs
ADUs may be created within the portions of existing multifamily structures that are not used as livable space (Gov. Code, § 66323, subd. (a)(3)(A)). Local agencies shall allow at least one ADU within an existing multifamily dwelling and up to 25 percent of the existing multifamily dwelling units (Gov. Code, § 66323, subd. (a)(3)(B)). Examples of structures that are not used as livable space include, but are not limited to: storage rooms, boiler rooms, passageways, attics, basements, or garages (Gov. Code, § 66323, subd. (a)(3)(A)).

4. Multifamily Detached ADUs
Up to two detached ADUs are allowed on a lot that has a proposed multifamily dwelling, or up to eight detached ADUs are allowed on a lot with an existing multifamily dwelling, not to exceed the number of existing units on the lot. These ADUs are subject to fourfoot rear and side yard setbacks and height limits of 16, 18, or 20 feet depending on conditions specified in Government Code section 66321, subdivision (b)(4). (Gov. Code, § 66323, subd. (a)(4)(A).) A local agency may not require that a setback be modified for an existing multifamily dwelling with setbacks less than four feet as a condition of ADU application approval (Gov. Code, § 66323, subd. (a)(4)(B)).

The local agency must allow the four categories of ADUs listed above to be combined.. For example, pursuant to Government Code 66323, subdivision (a), local governments must allow units created pursuant to subparagraphs (1) and (2) together or (3) and (4) together. This means that on single-family lots, local agencies must allow at least one ADU constructed from existing space, one JADU, and one newly constructed detached ADU. For multifamily lots, local agencies must permit at least one ADU constructed from existing non-livable space (or up to 25 percent of the number of multifamily units), and two detached ADUs.

ATTACHMENT 13

Page 525 of 569 ends

18 Allowable 66323 ADU Combinations
All formats listed below may be combined as explained in the preceding section Single-Family
Primary Dwelling
Multifamily
Primary Dwelling
Gov. Code, §
66323, subd.
(a)(1)
ADU
constructed
from
proposed or
existing
space
• Sometimes referred to as
“Conversions,” “Interior,”
“Created within.”
• May expand 150 square
feet from the existing
accessory structure for
ingress and egress.
• Must have exterior access.

Does not apply
Gov. Code,
§§ 66323,
subd. (a)(1);
66333-
66339
JADUs
• Created within existing or
proposed dwelling.
• 500 square-foot interior
livable space maximum.
• May be created from within
attached garage.

Does not apply
Gov. Code, §
66323, subd.
(a)(2)
New
construction
detached
• May be in front setback.
• 800 square-foot interior
livable space maximum.

Does not apply
Gov. Code, §
66323, subd.
(a)(3)(A)
Constructed
in existing
space not
used as
livable
Does not apply
• Existing non-livable space (e.g.,
gyms, enclosed parking, etc.) within
the multifamily structure.
• Allows at least one ADU or up to
25% of existing primary units.

Gov. Code, §
66323, subd.
(a)(4)
Detached
from
primary
dwelling
Does not apply
• Up to two units detached from
proposed primary dwelling, or
• Up to eight units detached from
existing primary dwelling, not to
exceed the number of existing units
on the lot.
• Four-foot side and rear setbacks.

In addition to the units described in Government Code section 66323, a local agency must allow at least one unit described in Section 66314 and may impose objective development and design standards on such units.

ATTACHMENT 13

Page 526 of 569 ends

19 What design, zoning, or other local standards can be imposed on 66323 Units? A local agency may not impose development or design standards, including both local standards and standards found in State ADU Law, on 66323 Units that are not specifically listed in Government Code section 66323. (Gov. Code, § 66323, subds. (a), (b).) This includes, but is not limited to, parking, height, setbacks, or other zoning provisions (e.g., lot size, open space, floor area ratio, etc.).

Additionally, rentals of 66323 ADUs and JADUs must be for terms longer than 30 days. (Gov.

Code, §§ 66323, subd. (e); 66333, subd. (g).) Fire sprinklers are not required for the ADU if not required for the primary residence, and the construction of an ADU or JADU may not trigger the requirement for fire sprinklers in an existing multifamily dwelling. (Gov. Code, § 66323, subd. (d).)
Can a 66323 ADU created by converting an existing accessory structure be expanded? Yes. An ADU created within the existing space of an accessory structure can be expanded beyond the physical dimensions of the structure up to 150 square feet solely for the purpose of accommodating ingress and egress. (Gov. Code, § 66323, subd. (a)(1)(A).) An example is the construction of a staircase to reach a second story ADU. The ADUs shall conform to setbacks sufficient for fire and safety. (Gov. Code, § 66323, subd. (a)(1)(C).) NOTE: A JADU may be created within the walls of a single-family residence and not within an accessory structure.

For more information regarding 66323 multifamily accessory units, please see Multifamily ADUs.

ADUs
What is an ADU?
An ADU is accessory to a primary residence and has complete independent living facilities for one or more persons. ADUs are either “detached from,” “attached to,” or located within the proposed or existing primary dwelling. This includes attached garages, storage areas or similar spaces, and accessory structures. The ADU can also be detached from the proposed or existing primary dwelling, including detached garages, provided it is located on the same lot. (Gov. Code. §§ 66313, subd. (a); 66314, subd. (d)(3).)2 Bedrooms
Can a limit on the number of bedrooms in an ADU be imposed? A limit on the number of bedrooms could be construed as a discriminatory practice towards protected classes, such as familial status, and would be considered a constraint on the development of ADUs (Gov. Code, § 65008). Building standards for minimum bedroom size still apply.
2 Note that certain federal financing programs mentioned in the section on “Funding,” below, may have different definitions of an ADU.

ATTACHMENT 13

Page 527 of 569 ends

20 Can an ADU have no bedrooms?
A limit on the number of bedrooms could be construed as a discriminatory practice towards protected classes, such as familial status, (Gov. Code, § 65008) and could also unreasonably restrict the ability of homeowners to create ADUs (Gov. Code, § 66311). Additionally, efficiency units, which are an allowable type of ADU, are not required to have bedrooms. (Gov. Code, § 66313, subd. (a)(1).) Building standards for minimum bedroom size still apply.

Building Code Violations
Can an ADU application be denied due to building code violations? An ADU application pursuant to Government Code section 66314 may be denied due to building code violations on the primary unit only if the violations present a threat to public health and safety and are affected by the construction of the ADU (Gov. Code, § 66322, subd. (b)). However, all ADUs must comply with building code and health and safety requirements for dwellings.

Certificate of Occupancy
Can a Certificate of Occupancy for an ADU be issued without a Certificate of Occupancy being issued for the primary dwelling first?
Only under specific circumstances. A local agency can issue a certificate of occupancy for an ADU constructed in a county that is subject to a proclamation of a state of emergency made by the Governor on or after February 1, 2025, even if the primary dwelling has not yet been issued a certificate of occupancy, if certain requirements are met, including that the primary dwelling was substantially damaged or destroyed by an event referenced in the state of emergency proclamation (Gov. Code, § 66328).

Coastal Commission
Do state ADU laws apply to jurisdictions located in the California Coastal Zone? Yes. ADU laws apply to jurisdictions in the California Coastal Zone, but do not alter or lessen the effect or application of Coastal Act resource protection policies (Gov. Code, § 66329).

Coastal localities should seek to harmonize the goals of protecting coastal resources and addressing housing needs of Californians. For example, localities should amend Local Coastal Programs for California Coastal Commission review to comply with the California Coastal Act and new State ADU Laws. For more information, see the California Coastal Commission 2022 Memo and reach out to the local Coastal Commission district office.

What is the application process in the California Coastal Zone? When a certified local coastal program contains provisions regarding ADUs, Aa local agency shall either approve or deny a coastal development permit application for an ADU within 60 days of receiving a completed application, if there is an existing primary dwelling, and shall not be required to hold public hearings for coastal development permit applications for ADU. The process to approve or deny a coastal development permit application shall happen concurrently with the process to approve or deny an application for an ADU under Section 66317 (Gov. Code, § 66329, subd. (a)).

ATTACHMENT 13

Page 528 of 569 ends

21 When a certified local coastal program does not contain provisions regarding ADUs, the California Coastal Commission’s review process to approve or deny a coastal development permit application shall happen concurrently with the process to approve or deny an application for an ADU under Section 66317, provided that the California Coastal Commission has received a completed application for a coastal development permit pursuant to Section 65943 (Gov. Code, § 66329, subd. (b)(3)). If the California Coastal Commission has not approved or denied the completed coastal development permit application for the ADU within 60 days, and there is an existing primary dwelling, the application shall be deemed approved (Gov. Code, § 66329, subd. (b)(5)).

Can the California Coastal Commission delay a permit for an ADU? Yes. If the coastal development permit application to create or serve an ADU is submitted with a coastal development permit application to create or serve a new single-family or multifamily dwelling on the lot, the California Coastal Commission may delay approving or denying the coastal development permit application for the ADU until the California Coastal Commission approves or denies the coastal development permit application to create or serve the new single-family or multifamily dwelling (Gov. Code, § 66329, subd. (b)(4)).

What if a local agency does not have a Local Coastal Program? If the local agency does not have a certified local coastal plan or program, as defined in Public Resources Code section 31001, then the California Coastal Commission shall either approve or deny the coastal development permit application for an ADU within 60 days of receiving a completed application (Gov. Code, § 66329, subd. (b)(1)). A local agency that does not have a certified local coastal plan or program shall immediately notify the California Coastal Commission that a permit application for an ADU is complete pursuant to Section 66317 (Gov.

Code, § 66329, subd. (b)(2)).

Deed Restrictions
Can an affordable housing deed restriction be imposed on an ADU? No. A local agency cannot impose a deed restriction on an ADU. Government Code section 66315 states, “Section 66314 establishes the maximum standards that a local agency shall use to evaluate a proposed accessory dwelling unit on a lot that includes a proposed or existing single-family dwelling. No additional standards, other than those provided in Section 66314, shall be used or imposed, including an owner-occupant requirement, except that a local agency may require that the property may be used for rentals of terms 30 days or longer.” Section 66314, subdivision (b)(1) allows for local objective standards, but the examples provided all relate to design and development standards (e.g., parking, height, setback, landscape, maximum size of a unit). A deed restriction is not such a standard and thus cannot be imposed.

Can a deed restriction be imposed on a JADU?
Yes. A local agency may adopt an ordinance for the creation of JADUs (Gov. Code, § 66333).

That ordinance must “[r]equire the recordation of a deed restriction” that includes only a prohibition on the sale of the JADU separate from the sale of the single-family residence and a restriction on the size and attributes of the JADU that conforms with state law (Gov. Code, § 66333, subds. (c)(1), (c)(2)).

ATTACHMENT 13

Page 529 of 569 ends

22 Fees
What types of fees are considered impact fees?
Impact fees charged for the construction of ADUs and JADUs must be determined in accordance with the Mitigation Fee Act and include any monetary exaction other than a tax or special assessment that is charged by a local agency in connection with the approval of an ADU or JADU for the purpose of defraying all or a portion of the cost of public facilities relating to the ADU or JADU. (Gov. Code, §§ 66311.5, subd. (c)(2); 66000.) A local agency, special district, or water corporation shall not consider ADUs or JADUs as a new residential use for the purposes of calculating connection fees or capacity charges for utilities, including water and sewer services unless the ADU or JADU is being constructed concurrently with a new singlefamily home. (Gov. Code, § 66311.5, subd. (d).) Can impact fees be charged for an ADU less than 750 square feet or a JADU of less than 500 square feet?
No. An ADU is exempt from incurring impact fees from local agencies, special districts, and water corporations if it contains 750 square feet of interior livable space or less. If an ADU contains greater than 750 square feet of interior livable space, impact fees shall be charged proportionately in relation to the square footage of the ADU to the square footage of the primary dwelling unit. A JADU is exempt from incurring impact fees from local agencies, special districts, and water corporations if it contains 500 square feet of interior livable space or less. If a JADU contains greater than 500 square feet of interior livable space, impact fees shall be charged proportionately in relation to the square footage of the JADU to the square footage of the primary dwelling unit. (Gov. Code, § 66311.5 subd. ()(1).) In this specific instance, impact fees also include Quimby fees specified in Government Code section 66477 (Gov. Code, § 66311.5 subd. (c)(2)).

Can school districts charge impact fees?
Yes. School districts are authorized to, but do not have to, levy impact fees for ADUs larger than 500 square feet of interior livable space pursuant to Section 17620 of the Education Code and the Mitigation Fee Act (Gov. Code, § 66000). ADUs and JADUs that are less than 500 square feet of interior livable space are not subject to school impact fees. Local agencies are encouraged to coordinate with school districts to carefully weigh the importance of promoting ADUs and JADUs, and to ensure appropriate nexus studies are conducted on fees to facilitate construction or reconstruction of adequate school facilities, as required by the Mitigation Fee Act. ADUs or JADUs that contain less than 500 square feet of interior livable space shall be considered other residential construction that does not increase assessable space by 500 square feet (Gov. Code, § 66311.5, subd. (c)(3)).

What is “Proportionality”?
“Proportionality” is some amount in relation to a total amount, in this case, an impact fee for a single-family dwelling. For example, a 2,000 square-foot primary dwelling with a proposed 1,000 square-foot ADU could result in 50 percent of the impact fee that would be charged for a new primary dwelling on the same site. (Gov. Code, § 66311.5, subd. (c)(1).)
ATTACHMENT 13

Page 530 of 569 ends

23 Can I still be charged water and sewer connection fees? ADUs constructed from existing space and JADUs shall not be considered by a local agency, special district, or water corporation to be a new residential use for purposes of calculating connection fees or capacity charges for utilities, unless constructed concurrently with a new single-family dwelling (Gov. Code, § 66311.5, subd. (b)). The connection fee or capacity charge shall be proportionate to the burden of the proposed ADU, based on its square footage or drainage fixture unit as compared to the primary dwelling (Gov. Code, § 66311.5, subd. (e)).

Fire Protection and Fire Sprinkler Requirements
Can fire sprinklers be required for ADUs and JADUs?
Only when sprinklers are required for the existing primary residence. Installation of fire sprinklers shall not be required in ADUs or JADUs if sprinklers are not required by building standards for the existing primary residence. For example, a detached single-family home designed and constructed decades ago would not have been required to have fire sprinklers installed under the applicable building code at the time. However, if the same primary dwelling recently underwent significant alteration and is now required to have fire sprinklers, any ADU or JADU created after that alteration must be provided with fire sprinklers. Additionally, the construction of any ADUs or JADUs shall not trigger a requirement for fire sprinklers for the primary residence. (Gov. Code, §§ 66314, subd. (d)(12); 66323, subd. (d).) Funding
Is there financial assistance or funding available for ADUs? Possibly. While at the time of this writing the funds have been exhausted, the California Housing Finance Agency’s (CalHFA) ADU Grant Program provided up to $40,000 in assistance to reimburse qualifying homeowners for predevelopment costs necessary to build an ADU or JADU on a lot with an owner-occupied single-family dwelling unit. The ADU Grant Program was intended to create more housing units in California by providing a grant to reimburse qualifying homeowners for predevelopment costs. Predevelopment costs include, but are not limited to, architectural designs, permits, soil tests, impact fees, property surveys, and energy reports.

Some local agencies are creating funding opportunities for ADU/JADU predevelopment and construction costs, or they are waiving fees.

For local agencies wanting to apply for funding for ADUs and JADUs, some of HCD’s funding programs, such as the CalHome Program, the Permanent Local Housing Allocation program, the Prohousing Incentive Program, and the Local Housing Trust Fund Program, do include funding for these housing types as eligible activities.

For more information on local and state funding opportunities for ADU/JADU predevelopment or construction, or funding options for local agencies, please see the Grants and Funding section of our ADU webpage: https://www.hcd.ca.gov/building-standards/adu.

The Federal Housing Administration (FHA), Freddie Mac, and Fannie Mae also provide loans to support ADUs. The links below include information on these finance programs, including relevant definitions and criteria.

ATTACHMENT 13

Page 531 of 569 ends

24 FHA
The FHA recently expanded access to mortgage financing for homes that have or will include ADUs. Specifically, the updated loan policies allow for the inclusion of rental income from the ADU in the borrower’s qualifying income and would allow more borrowers to qualify for FHA financing for properties with ADUs. This includes the 203(k) Rehabilitation loan. Note that the 203(k) Rehabilitation loan may only be used to construct an attached ADU.

For more information on the updated policies, please reference the FHA Single Family Housing Policy Handbook at https://www.hud.gov/sites/dfiles/OCHCO/documents/40001-hsghupdate15-052024.pdf, or the 2023 Mortgagee Letter that includes specific ADU finance changes in the handbook https://www.hud.gov/sites/dfiles/OCHCO/documents/2023- 17hsgml.pdf. Interested parties should look to HUD’s website for any updates.

Freddie Mac
Freddie Mac now offers several options for adding an ADU to an existing home and financing a purchase with the intention to rent or build an ADU. This includes allowing rental income from ADUs to be included in qualified income for a loan.

For more information, please visit https://sf.freddiemac.com/docs/pdf/fact-sheet/adu-factsheet.pdf.

Fannie Mae
Fannie Mae now offers financing options for adding an ADU to an existing property, building a home with an ADU using Construction-to-Permanent Financing, and buying a home with an existing ADU.

For more information, please visit https://singlefamily.fanniemae.com/originatingunderwriting/mortgage-products/accessory-dwelling-units.

Height Requirements
Is there a limit on the height of an ADU?
There is no height limit contained in State ADU Law, but local agencies may impose height limits pursuant to Government Code section 66321, subdivision (b)(4). A local agency may impose a height limit by adopting a compliant ADU ordinance.

A local agency may not impose a height limit that is less than the following:

Detached ADUs
16 feet on a lot with a proposed or existing single-family or multifamily dwelling unit (Gov.

Code, § 66321, subd. (b)(4)(A)).
18 feet on a lot with an existing or proposed single-family or multifamily dwelling, including an additional 2 feet to accommodate roof pitch that aligns with the primary dwelling, when the lot is a half-mile from a major transit stop or high-quality transit corridor (Gov. Code, § 66321, subd. (b)(4)(B)). Please see the ADU Glossary for definitions of these terms.

ATTACHMENT 13

Page 532 of 569 ends

25 18 feet height on a lot with an existing or proposed multifamily, multistory dwelling (Gov. Code, § 66321, subd. (b)(4)(C)).

If a detached two-story ADU can be built according to the height allowances required under State ADU Law while remaining compliant with the building code, a local agency cannot deny an ADU application to create a two-story ADU, irrespective of the underlying zoning that might restrict a primary dwelling to one story. (Gov. Code, §§ 66321, subd. (b)(4)(D); 66314, subd. (d)(8).)
Attached ADUs
25 feet or the height limitation that applies to the primary dwelling in the local zoning ordinance, whichever is lower (Gov. Code, § 66321, subd. (b)(4)(D)).

Is there a limit on the number of stories of an ADU?
There is no limit on the number of stories contained in State ADU Law. A local agency must allow at least two stories, if this can be accommodated under the applicable height limit while complying with all applicable building standards, and an attached ADU may be built to the height of the zoning for the primary dwelling or up to 25 feet, whichever is lower. (Gov. Code, § 66321, subd. (b)(4)(D).)
Are there tools available to determine if a project qualifies for 18 feet in height? The California State Geoportal features an interactive map and searchable database to assess whether any California address is within a High-Quality Transit Corridor (HQTC) (as described in Public Resources Code sections 21155, 21064.3, and 21060.2). This can assist with determining if your projects are eligible for an extra two feet in height. However, the State ADU Law does not designate a definitive resource for making HQTC proximity determinations.

Applicants should go to their Metropolitan Planning Organizations first to find out if they are in a HQTC. If there is not one in their area, then they should go to their local agency.

Homeowners Associations (HOAs)
Can CC&Rs prohibit the construction or use of an ADU or JADU? No. Sections 714.3 and 4751 of the Civil Code nullify covenants, conditions, and restrictions (CC&Rs) that either effectively prohibit or unreasonably restrict the construction or use of an ADU or JADU on lots zoned to permit single-family residential uses. Such CC&Rs, including operating rules, are void and unenforceable. Applicants who encounter prohibitions of ADUs and JADUs within CC&Rs, whether implicit or explicit, are encouraged to reach out to their local agency.

What restrictions can be placed on an ADU or JADU?
HOAs may impose some limited objective standards on an ADU or JADU, such as requiring, within reason, specific materials, architectural styles, or other design and aesthetic restrictions.

However, these standards may not be more stringent than State ADU Law and thereby unreasonably increase the cost to construct or effectively prohibit or extinguish the ability to create or serve an ADU or JADU. Reasonable restrictions in covenants, restrictions, and conditions, as described in the Civil Code, shall not include any fees or other financial requirements (Civ. Code, § 714.3, subd. (b)).

ATTACHMENT 13

Page 533 of 569 ends

26 Examples of effective prohibitions, unreasonable costs, and extinguishments of the ability to construct an ADU or JADU may include, but would not be limited to:
• Any delay in reviewing an ADU or JADU for compliance with reasonable restrictions beyond the timeframes required of local agencies (60 days) or that significantly delay the construction or use of an ADU or JADU.
• Requiring alteration to an ADU or JADU application that would cause the property owner to incur substantial costs or forgo the development. • Imposing a condition that would necessitate re-applying or amending a building permit application that substantially complies with State ADU and JADU Laws. • Mandating neighboring property owners’ approval or agreement for an ADU or JADU application or considering any disapproval or disagreement to the construction or use of an ADU or JADU by the neighbors as part of the local agency’s ministerial process to approve or deny the application.
• Restricting the placement or location of an ADU or JADU such that it would be rendered infeasible or unusable by the property owner.
• Requiring major structural elements or design changes beyond the requirements set forth in State ADU and JADU Law that would extinguish the ability to construct or use the ADU or JADU.
• Imposing restrictions that are not objective or not knowable or available to the property owners in advance of submitting the application.

Property owners whose construction or use of an ADU or JADU is impeded by an HOA (or their representatives or agents) are encouraged to reach out to their local agency and to seek legal counsel.

Can an HOA review or influence a local agency’s ministerial approval to create or serve an ADU or JADU?
No. An HOA may not influence a local agency’s ministerial approval of an ADU or JADU. Local agencies must provide an approval process that only includes ministerial provisions for the approval of ADU permit applications. This approval process shall not include discretionary processes, provisions, or requirements except as provided in Government Code section 66315. Thus, third party reviews by an HOA or their representatives or agents would violate State ADU Law. (Gov. Code, § 66315.) No other local ordinances, policies, or regulations may be applied in the approval or denial of an ADU or JADU permit application (Gov. Code, § 66317, subd. (c)). If a local agency allows an HOA to be involved in any part of an ADU or JADU application process, the local agency is in violation of State ADU Law.

Housing Elements and Prohousing Designation
Do ADUs and JADUs count toward a local agency’s RHNA?
Yes. Pursuant to Government Code sections 66330, and 65583.1, ADUs and JADUs may be utilized towards the RHNA and the Housing Element Annual Progress Report (APR) required by Government Code section 65400. To credit a unit toward the RHNA, HCD and the Department of Finance (DOF) utilize the U.S. Census definition of a housing unit. Generally, an ADU, and a JADU with shared sanitation facilities, and any other unit that meets the U.S.

Census definition and is reported to DOF as part of the DOF annual City and County Housing Unit Change Survey can be credited toward the RHNA based on the appropriate income level.

ATTACHMENT 13

Page 534 of 569 ends

27 The housing element or APR must include a reasonable methodology to demonstrate the level of affordability. Local governments can track actual or anticipated affordability to assure ADUs and JADUs are counted towards the appropriate income category. For example, some local governments request and track information such as anticipated affordability as part of the building permit or other local applications.

For more information, please refer to the Housing Element Building Blocks or contact [email protected].

What analysis is required to count ADUs toward the RHNA in the housing element? To count ADUs towards the RHNA in the housing element, local agencies must generally use a three-part approach: (1) development trends, (2) anticipated affordability, and (3) resources and incentives. Development trends must consider ADUs permitted in the prior planning period and may also consider more recent trends. Anticipated affordability can use a variety of methods to estimate the affordability by income group. Common approaches include rent surveys of ADUs, using rent surveys and square footage assumptions and data available through the APR required by Government Code section 65400. Resources and incentives include policies and programs to encourage ADUs, such as prototype plans, fee waivers, expedited procedures, and affordability monitoring programs.

Are ADUs required to be addressed in the housing element? Yes. The housing element must include a description of zoning available to permit ADUs, including development standards and analysis of potential constraints on the development of ADUs. The element must include programs to address identified constraints. In addition, housing elements must include a plan that incentivizes and promotes the creation of ADUs that can offer affordable rents for very low-, low-, or moderate-income households and requires HCD to develop a list of state grants and financial incentives in connection with the planning, construction, and operation of affordable ADUs. (Gov. Code, § 65583; HSC, § 50504.5.) Please note, if a local jurisdiction has an ADU program as part of a housing element, even once the housing element is approved, the ADU ordinance needs to be updated regularly to ensure compliance with new state laws.

Can ADUs and JADUs impact a local agency’s Prohousing Designation status? Yes. To qualify for a Prohousing Designation, a local agency must be in compliance with all applicable state housing laws, such as those mentioned in Government Codes section 65585, subdivision (j), which includes State ADU Law. An approved housing element and any associated programs which promote ADU development will also need to be enacted and in compliance to meet the minimum threshold requirements for a Prohousing Designation.

Additionally, ADUs and JADUs are specifically identified within the Prohousing Designation Program as designation criteria under California Code of Regulations, Title 25, section 6606, meaning that an ADU ordinance or program which promotes ADU development beyond the minimum requirements of State ADU Law may score additional points towards their Prohousing Designation. In other words, local agencies that are in violation of State ADU Law will be ineligible for a Prohousing Designation, while local agencies that promote additional ADU development can score additional points towards their Prohousing Designation, and all the benefits that designation provides. (CCR Title 25, §§ 6600-6608).

ATTACHMENT 13

Page 535 of 569 ends

28 JADUs
What is a JADU?
A “junior accessory dwelling unit” or JADU is a unit that is no more than 500 square feet of interior livable space in size and contained entirely within a single-family residence. A JADU may include separate sanitation facilities or may share sanitation facilities with the existing structure. (Gov. Code, § 66333.)
Are two JADUs allowed on a lot?
No. Only one JADU may be created per lot zoned for single-family residences with an existing or proposed single-family residence (Gov. Code, § 66333, subd. (a)). The JADU may be created within the walls of the proposed or existing single-family residence, including attached garages (Gov. Code, § 66333, subd. (d)). If there are multiple detached single-family residential units on one lot, there can only be one JADU.

Can a JADU be created within a “half-plex”?
Yes, a JADU is permitted in a half-plex. A half-plex consists of two primary dwelling units on separate lots that share a dividing wall. One JADU is permitted in each half-plex in areas zoned for single-family use. (Gov. Code, § 66333, subd. (a).) If two units are attached on a single lot (i.e., a duplex), the primary dwelling is considered multifamily and would not qualify for a JADU.

Are JADUs required to have an interior connection to the primary dwelling? JADUs are required to be within the walls of the primary dwelling but are not required to have an interior connection to the primary dwelling. However, if the JADU does not include a separate bathroom, the JADU must include an interior entrance to the main living area. (Gov.

Code, § 66333, subd. (e)(2).)
Are JADUs allowed in detached accessory structures?
No, JADUs are not allowed in accessory structures. The creation of a JADU must be within the single-family residence. As noted above, “enclosed uses” within the residence, such as attached garages, are eligible for JADU creation. (Gov. Code, § 66333, subd. (d).) Are JADUs allowed to be increased by up to 150 square feet when created within an existing structure?
No. Only ADUs that are created from existing accessory structures are allowed to add up to 150 square feet “beyond the physical dimensions of the existing accessory structure” to provide for ingress or egress (Gov. Code, § 66323, subd. (a)(1)(A)).

What can local agencies require as part of an “efficiency kitchen”? An efficiency kitchen is a cooking facility with appliances, a food preparation counter, and storage cabinets that are of reasonable size in relation to the size of the JADU (Gov. Code, § 66333, subds. (f)(1), (f)(2)). A local agency cannot be more restrictive than this definition. Thus, requirements such as counter or cabinet sizes, specified electrical or gas connections, or appliance types are not authorized by State JADU Law. Please note: 220V circuits are not required for an efficiency kitchen.

Are JADUs required to provide parking?
No. Local agencies may not require parking as a condition to permitting a JADU, even when the JADU is converted from an attached garage (Gov. Code, § 66334, subd. (a)).

ATTACHMENT 13

Page 536 of 569 ends

29 Local ADU Ordinances and Local Agencies
Should a local ordinance encourage the development of ADUs? Yes. Pursuant to Government Code section 66310, the California Legislature found and declared that, among other things, California is facing a severe housing crisis and ADUs are a valuable form of housing that meets the needs of family members, students, the elderly, inhome health care providers, people with disabilities, and others. Therefore, ADUs are an essential component of California’s housing supply.

Recent changes to State ADU Law intend to address barriers, streamline approval, and expand potential capacity for ADUs, recognizing their unique importance in addressing California’s housing needs. The preparation, adoption, amendment, and implementation of local ADU ordinances must be carried out consistently with Government Code section 66310 and must not unduly restrict the creation of ADUs. Local governments adopting ADU ordinances should carefully weigh the adoption of zoning, development standards, and other provisions for impacts on the development of ADUs.

State ADU Law provides the statutory minimum requirements for ADUs and JADUs. Local governments may elect to be less restrictive than the statutory minimum to further the creation of ADUs and JADUs. (Gov. Code, § 66325, subd. (b).) Many local governments have embraced the importance of ADUs as an important part of their overall housing policies and have pursued innovative strategies.

Can a local agency adopt an ADU “bonus program?”
Yes. One common strategy used by local agencies to promote ADU development is to adopt ADU bonus programs. HCD supports this approach to go above and beyond State ADU Law’s requirements to address California’s ongoing housing crisis. A successful ADU bonus program should meet the following criteria:

1. The ADU bonus program is completely optional – There is no requirement, and no consequence for not taking part in a local bonus program.

2. The ADU bonus program only offers benefits in addition to the provisions of State ADU Law, not in lieu of them – All state-mandated requirements are granted unconditionally.

3. The ADU bonus program removes one or more physical constraints, such as a limitation on the number of allowable units on a lot, ADU size, height, setback requirements, or a waiver of design and development criteria.

Does HCD have enforcement authority over ADU and JADU ordinances? Yes. Pursuant to Government Code sections 66326, subdivision (a), and 66333.5, subdivision (a), local agencies are required to submit a copy of newly adopted ADU and JADU ordinances to HCD within 60 days of adoption. HCD may thereafter provide written findings to the local agency as to whether the ordinance complies with State ADU Law. If HCD finds that the ADU or JADU ordinance does not comply with State ADU Law, the local agency must respond to HCD’s written findings within 30 days. The local agency shall either amend its ordinance in accordance with HCD’s findings, or adopt the ordinance without changes, but include findings in its resolution explaining why the ordinance complies with State ADU Law despite HCD’s findings. (Gov. Code, §§ 66326, subd. (b); 66333.5, subd. (b)(2).) If the local agency fails to respond to HCD’s findings regarding its ordinance within the 30-day timeline, that ordinance is null and void and the local agency must only apply State ADU Law when permitting ADUs and ATTACHMENT 13

Page 537 of 569 ends

30 JADUs (Gov. Code, §§ 66326, subd. (d); 66333.5, subd. (d)). Although not required by State ADU Law, HCD may continue to offer further technical assistance to the local agency.

However, if the local agency does not amend its ordinance in accordance with HCD’s findings or adopt a resolution explaining why the ordinance is compliant, HCD shall notify the local agency and may notify the Attorney General that the local agency is in violation of State ADU Law. (Gov. Code, §§ 66326, subd. (c)(1); 66333.5, subd. (c)(1).) While an ordinance is noncompliant, the local agency shall apply state standards for the approval of ADUs, until the local agency adopts a compliant ordinance. (Gov. Code, § 66316.) In addition, HCD may review, adopt, amend, or repeal guidelines to implement uniform standards or criteria for ADUs and JADUs that supplement or clarify State ADU Law (Gov.

Code, §66313.5).

Do local agencies have to adopt an ADU ordinance?
No. Local agencies may choose not to adopt an ADU or JADU ordinance. Should a local agency choose not to adopt an ADU or JADU ordinance, any proposed ADU or JADU development would be subject only to the standards set forth in State ADU Law. (Gov. Code, §§ 66315, 66316; 66333.5, subd.(d).) A local agency that adopts an ADU ordinance may impose objective development and design standards in compliance with Government Code section 66314.

Is a local agency required to send an ADU ordinance to HCD? Yes. A local agency, upon adoption of an ADU or JADU ordinance, must submit a copy of the adopted ordinance to HCD within 60 days after adoption. If a local agency fails to submit an adopted ADU ordinance to HCD within the 60-day timeline or fails to respond to HCD’s findings regarding its ordinance within the 30-day timeline, that ordinance is null and void and the local agency must only apply State ADU Law when permitting ADUs (Gov. Code, §§ 66326, subd. (d); 66333.5, subd. (d)). After the adoption of an ordinance, HCD may review and submit written findings to the local agency as to whether the ordinance complies with the State ADU Law. (Gov. Code, §§ 66326, subd. (a); 66333.5, subd. (a).) Are charter cities and counties subject to the new ADU laws? Yes. State ADU Law applies to a local agency, which is defined as a city, county, or city and county, whether general law or chartered (Gov. Code, §§ 66312; 66313, subd. (g)).

Do ADU laws apply to areas governed by the Tahoe Regional Planning Agency (TRPA)? Possibly. The TRPA was formed through a bistate compact between California and Nevada, which elevates its authority above state laws. Under this authority, TRPA has adopted certain restrictions that effectively limit lot coverage on developed land. State ADU Law may conflict to a degree with the TRPA standards, and to the extent that it does, the TRPA law preempts or overrides State ADU Law. For more information, please see: https://www.trpa.gov/adus/.

Manufactured Homes
Can a manufactured home be used as an ADU?
Yes. By definition, an ADU includes manufactured homes (Gov. Code, § 66313, subd. (a)(2); HSC, § 18007).

ATTACHMENT 13

Page 538 of 569 ends

31 For more information on Manufactured Homes please contact the Division of Codes and Standards at [email protected].

Mobilehome Parks
Are ADUs permitted on lots within mobilehome parks or special occupancy parks? No. A lot, as defined in Health and Safety Code sections 18210 and 18862.23, allows for only one manufactured home, mobilehome, or recreational vehicle. Health and Safety Code section 18862.23 also allows one tent, camp car, camping cabin, or camping party on a lot within a special occupancy park.

For more information, please contact the Division of Codes and Standards at:

[email protected] for Northern CA or [email protected] for Southern CA.

Multifamily ADUs
What is considered a multifamily dwelling under State ADU Law? For the purposes of creating an ADU, a structure with two or more attached dwellings on a single lot is considered a multifamily dwelling structure. Multiple detached single-unit dwellings on the same lot are not considered multifamily dwellings for the purposes of State ADU Law.

Does a local agency have to permit ADUs on lots zoned for multifamily use? Yes. A local agency must permit an attached, detached, or converted ADU on a lot that is zoned to allow single-family or multifamily residential use and includes an existing or proposed dwelling (Gov. Code, § 66314, subds. (d)(2), (d)(3)). An applicant may build a detached or a converted ADU on a site in a residential or mixed-use zone with a proposed or existing multifamily dwelling. (Gov. Code, § 66323, subds. (a)(3), (a)(4).) (See next question for more information.)
How many ADUs are allowed on a multifamily site under Government Code section 66323?
Under Government Code section 66323, an applicant may apply to build up to eight detached ADUs (Gov. Code, § 66323, subd. (a)(4)(A)) and at least one conversion ADU within an existing multifamily dwelling and up to 25 percent of the number of units in the existing multifamily dwelling (Gov. Code, § 66323, subd. (a)(3)(B)).

Health and Safety Code section 18007, subdivision (a): “Manufactured home,” for the purposes of this part, means a structure that was constructed on or after June 15, 1976, is transportable in one or more sections, is eight body feet or more in width, or 40 body feet or more in length, in the traveling mode, or, when erected on site, is 320 or more square feet, is built on a permanent chassis and designed to be used as a single-family dwelling with or without a foundation when connected to the required utilities, and includes the plumbing, heating, air conditioning, and electrical systems contained therein. “Manufactured home” includes any structure that meets all the requirements of this paragraph except the size requirements and with respect to which the manufacturer voluntarily files a certification and complies with the standards established under the National Manufactured Housing Construction and Safety Act of 1974 (42 U.S.C., Sec. 5401, and following).

ATTACHMENT 13

Page 539 of 569 ends

32 Can JADUs be created in multifamily dwelling structures? No. JADUs may only be constructed on a site with a proposed or existing single-family dwelling in an area zoned for single-family residences; a JADU cannot be constructed on a multifamily site (Gov. Code, § 66333, subd. (a)).

Can a permitting agency impose accessibility standards on ADUs converted from existing space?
Maybe. For more information on ADA standards as they apply to your specific dwelling, please contact the Division of Codes and Standards at [email protected].

Can a leasing office be converted into an ADU?
Yes. A leasing office within an existing multifamily dwelling structure can be converted to at least one ADU – and up to 25 percent of the existing multifamily dwelling units – provided the ADUs comply with state building standards for dwellings. (Gov. Code, § 66323, subd. (a)(3)(A).)

In addition, a leasing office on a lot with an existing multifamily dwelling may be converted into up to eight detached ADUs, not to exceed the number of existing units on the lot and subject to height limitations in section 66321, subdivision (b), and to rear yard and side setbacks of no more than four feet. (Gov. Code, § 66323, subd. (a)(4)(A).)

Finally, an ADU can be created from an accessory space, including a leasing office, that is either attached to or located within the multifamily structure or an accessory structure, or is detached from the primary dwelling and located on the same lot as the primary dwelling, and complies with other applicable standards. (Gov. Code, § 66314, subd. (d)(3).) Nonconforming Zoning
Can a local agency refuse to permit an ADU or JADU because of nonconforming zoning conditions?
State ADU Law limits a local agency’s ability to deny a permit application due to the correction of existing, nonconforming zoning conditions. Nonconforming zoning conditions are physical improvements on a property that do not conform to current zoning standards. (Gov. Code, § 66313, subd. (h)). For 66323 Units, a local agency cannot condition approval on the correction of nonconforming zoning conditions (Gov. Code, § 66323, subd. (c)). For all other ADUs, a local agency may only deny a permit to create an ADU due to zoning non-conformance when the non-conformance creates a threat to public health and safety and is affected by the construction of the ADU (Gov. Code, §§ 66322, subd. (b)).

Owner-Occupancy
Can local agencies require owner-occupancy for an ADU?
Only ADUs which are sold separately to a qualified buyer under Government Code section 66341, subdivision (c)(3), can require owner-occupancy. Otherwise, a local agency cannot impose an owner-occupancy requirement on any other ADU (Gov. Code, § 66315).

Are there any owner-occupancy requirements for JADUs?
Yes, under certain circumstances. If a JADU has shared sanitation facilities with the primary structure, owner-occupancy will be required. If the JADU does not have shared sanitation ATTACHMENT 13

Page 540 of 569 ends

33 facilities, or the owner is another governmental agency, land trust, or housing organization, owner-occupancy will not be required. The owner must reside in either the remaining portion of the primary residence or in the newly created JADU. (Gov. Code, § 66333, subd. (b).) Additionally, JADUs cannot be used as short-term rentals and, if rented, must be rented for longer than 30 days (Gov. Code, § 66333, subd. (g).)
Parking Requirements
Can ADU parking requirements exceed one space per unit or bedroom? No. Parking requirements for ADUs shall not exceed one parking space per unit or bedroom, whichever is less (Gov. Code, § 66314, subd. (d)(10)(A)). These spaces may be provided as tandem parking on a driveway (Gov. Code, § 66314, subd. (d)(10)(B)). Guest parking spaces shall not be required for ADUs under any circumstances. In addition, a local agency may not require off-street parking spaces to be replaced when a garage, carport, covered parking structure, or uncovered parking space is demolished in conjunction with the construction of an ADU or converted to an ADU (Gov. Code, § 66314, subd. (d)(11)).

Local agencies may choose to eliminate or reduce parking requirements for ADUs, such as requiring zero or a fraction of a parking space per each ADU (such as a ½ space per unit), to further reduce barriers to ADU construction and to facilitate more development of mixed-modal transportation such as walking and public transit.

Are certain ADUs exempt from parking requirements?
Yes. A local agency shall not impose parking standards on any of the following ADUs, pursuant to Government Code section 66322, subdivision (a):
1) ADUs located within one-half mile walking distance of public transit. 2) ADUs located within an architecturally and historically significant historic district. 3) ADUs that are part of the proposed or existing primary residence or an accessory structure.
4) When on-street parking permits are required but not offered to the occupant of the ADU. 5) When there is a car share vehicle located within one block of the ADU. 6) When a permit application for an ADU is submitted with a permit application to create a new single-family dwelling or a new multifamily dwelling on the same lot, provided that the ADU or the parcel satisfies any other criteria listed in Government Code section 66322, subdivision (a)(1)-(5).

Parking requirements for ADUs may not exceed one parking space per ADU or per bedroom, whichever is less (Gov. Code, § 66314, subd. (d)(10)). ADUs which have no bedrooms because they are an “efficiency unit” or studio do not increase the bedroom count.

In addition, local agencies may not impose parking requirements on 66323 Units.

Is flexibility for siting ADU parking recommended?
Yes. Local agencies should be flexible when siting parking for ADUs. Off-street parking spaces for the ADU shall be permitted in setback areas in locations determined by the local agency or through tandem parking unless specific findings are made otherwise based on specific site or regional topographical or fire and life safety conditions. (Gov. Code, § 66314, subd. (d)(10)(B).) ATTACHMENT 13

Page 541 of 569 ends

34 When a garage, carport, uncovered parking space, or covered parking structure is demolished in conjunction with the construction of an ADU, or converted to an ADU, the local agency shall not require that those off-street parking spaces for the primary unit be replaced (Gov. Code, § 66314, subd. (d)(11)).

Permit Applications and Permitting Agencies
What is an ADU permitting agency?
A permitting agency is “any entity that is involved in the review of a permit for an accessory dwelling unit or JADU and for which there is no substitute, including, but not limited to, applicable planning departments, building departments, utilities, and special districts.” (Gov.

Code, § 66313, subd. (k).) See also the Glossary section of this Handbook for this definition.

Are ADUs and JADUs permitted ministerially?
Yes. ADUs and JADUs subject to State ADU Law must be considered, approved or denied, and permitted ministerially, without discretionary review or a hearing (Gov. Code, §§ 66317, subd. (a); 66335, subd. (a); 66335.5). Development standards must be objective to allow for ministerial review (Gov. Code, § 66314, subd. (b)(1)). Objective standards require a uniform benchmark or reference that is knowable by both the permit applicant and the permitting agency prior to the submission of an application to create or serve an ADU (Gov. Code, § 66313, subd. (i)).

What are considered objective standards for ministerial approval? Examples include numeric and fixed standards such as heights or setbacks, or design standards such as specified colors or materials. See also the Glossary section of this Handbook for the definition of objective standards.

What would be considered subjective standards?
Subjective standards require independent judgement and are open to multiple interpretations.

Language such as “privacy,” “compatibility with neighboring properties,” “promoting design harmony and balance,” “must maintain similar architecture style,” or requiring “high quality materials” are subjective and may not be imposed on ADU development (Gov. Code, § 66313, subd. (i)).

What is the process and timeline for reviewing and approving ADU and JADU applications?
A permitting agency must determine whether an application for an ADU or JADU is complete and provide written notice of the determination not later than 15 business days after the permitting agency received the application (Gov. Code, §§ 66317, subd. (a)(2)(A); 66335, subd. (a)(2)(A)).

If it is determined that an application is incomplete, the permitting agency is required to provide the applicant with a list of incomplete items and a description of how the application can be made complete in the written notice (Gov. Code, §§ 66317, subd. (a)(2)(B); 66335, subd. (a)(2)(B)). If a permit application is determined to be incomplete or is denied, the permitting agency must provide a process for an applicant to appeal the decision (Gov. Code, §§ 66317, subd. (d)(1); 66335, subd. (e)(1)). The permitting agency must provide a final written ATTACHMENT 13

Page 542 of 569 ends

35 determination by not later than 60 business days after receipt of the written appeal (Gov.

Code, §§ 66317, subd. (d)(2); 66335, subd. (e)(2)).

What kind of environmental review is required for ADUs and JADUs? ADUs and JADUs approved ministerially are statutorily exempt from CEQA pursuant to Section 15268 (Ministerial Projects) of the CEQA guidelines and Section 21080, subdivision (b)(1) of the Public Resources Code. In addition, ADUs can be categorically exempt from CEQA pursuant to Sections 15301 and 15303 of the CEQA guidelines. ADU and JADU ordinances are statutorily exempt from CEQA pursuant to Section 21080.17. However, if an ADU application requires a discretionary coastal development permit, that discretionary permit may be subject to CEQA.

What does ministerial review of a permit application involve? A ministerial review ensures that the permit application meets all the applicable objective standards effective at the time of the review and uses no discretionary judgment, opinion, or subjective standards. Agency staff inspect the submitted application, site plan, and building plans for compliance with applicable standards. This often means that the permitting agency (i.e., planning, building, fire departments and utilities) reviews the application using only checklists. (Gov. Code, §§ 66316, 66317, 66320.)
Can an applicant delay the 60-day timeline?
Yes. If an applicant would like to request a delay on their application for any reason, they may do so. The 60-day period to approve or deny the permit shall be tolled for the period of the delay. (Gov. Code, §§ 66317, subd. (a)(3); 66335, subd. (a)(5).) When is an ADU permit application “deemed complete” without formal review? An ADU permit application is “deemed complete” when the permitting agency fails to make a timely written completeness determination within 15 business days (Gov. Code, §§ 66317, subd. (a)(2)(F)).

Do ADUs need a Certificate of Occupancy?
Yes, property owners must obtain a Certificate of Occupancy from the local agency prior to any residential occupancy of an ADU or JADU (Gov. Code, § 66328; 2022 CBC, § 111).

Can the local agency deny a permit application for an unpermitted ADU that was built before 2020?
Yes, but only with specific findings. A local agency shall not deny a permit for an unpermitted ADU that was constructed before January 1, 2020, due to the ADU being in violation of building standards, non-compliance with State ADU Law, or any local ordinance regulating ADUs (Gov. Code, § 66311.7, subd. (a)). However, the local agency may deny the permit if the local agency makes a finding that correcting the violation is necessary to protect the health and safety of the public or occupants of the structure, or if the building is deemed substandard pursuant to section 17920.3 of the Health and Safety Code (Gov. Code, § 66311.7, subds. (b), (c)). Please note, corrections, requirements, or issues relating to the building code or health and safety are under the local agency’s discretion and purview. Applicants applying for a permit for a previously unpermitted dwelling should follow the local agency’s appeals process if they feel there is a discrepancy with corrections or denials issued by the local agency.

ATTACHMENT 13

Page 543 of 569 ends

36 What happens when an application for an ADU is denied? The permitting agency denying the application must provide the applicant a full set of comments listing items that are defective or deficient and include a description of how the application may be remedied. A full set of comments includes all comments from all reviewers, from every permitting agency. The 60-day countdown continues until the complete list is provided. (Gov. Code, §§ 66317, subd. (b); 66335, subd. (b).) A local agency which has provided a complete set of correction comments has fulfilled this requirement. Following a denial, a subsequent application resets the 60-day period.

The applicant may address the proposed remedy and resubmit the application to the permitting agency. A local agency may charge a fee to process a resubmitted application. (Gov. Code, § 66335 subd. (c).)
How can I request technical assistance from HCD about the denial of my ADU application?
Questions and requests for technical assistance should be submitted through HCD’s ADU Portal, which is available on HCD’s ADU webpage: https://www.hcd.ca.gov/buildingstandards/adu. To reach the portal, navigate to “Contact the ADU Team.” Applicants should first work to address the denial with the permitting agency via the agency’s process. HCD may provide technical assistance after an application has been submitted. However, HCD may not respond or follow up with a permitting agency if there is no pending application.

Rental Terms
Are rental terms allowed?
Yes. Local agencies may require that ADUs and JADUs be rented for terms longer than 30 days (Gov. Code, § 66315; 66323, subd. (e); 66333, subd. (g)).

Sales and Separate Conveyance
Can ADUs be sold or separately conveyed?
A local agency may adopt a local ordinance to allow separate conveyance of the primary unit and the ADU as condominiums if the ordinance meets specific requirements laid out in Government Code section 66342. In addition, Government Code section 66341 creates a narrow exception to allow separate conveyance of an ADU to a qualified buyer if the property was built or developed by a qualified nonprofit corporation and meets other requirements specified in section 66341.

Senate Bill 9 (SB 9) (Chapter 162, Statutes of 2021)
How does SB 9 work with ADUs?
SB 9 (Gov. Code, §§ 65852.21 and 66411.7) and ADU Law are complementary. Both laws can be used together to create varying combinations of “SB 9 units” and ADUs. SB 9 allows for a lot to be split, with each of the two resulting lots eligible for up to two primary units. These primary units are distinct from ADUs and JADUs created under ADU Law and must be approved ministerially.

ATTACHMENT 13

Page 544 of 569 ends

37 When a lot split occurs, SB 9 requires the local agency to approve up to two units on each parcel but specifically states that only two units are allowed per parcel, despite what ADU Law would otherwise allow. Those two units could be two primary “SB 9 units,” or one primary unit and one ADU, or one primary unit and one JADU. But in no case is a local agency required to permit more than two units on either of the two parcels resulting from an SB 9 lot split.

When an SB 9 lot split has not occurred, the lot is eligible to receive up to two primary units under SB 9, as well as whatever combination of ADUs and JADUs it would otherwise be entitled to under ADU Law if SB 9 was not being used. In some instances, this may result in a total number of units on the parcel that is greater than what either SB 9 or ADU Law would allow on its own. However, if ADU Law is used on its own or in combination with SB 9 to create more than four total units on the lot, a local agency is not required to approve a lot split under SB 9.

See HCD’s SB 9 Factsheet for more information and resources.

Setbacks
Can setbacks be required for ADUs?
Yes. A local agency may impose objective development standards, such as setbacks, for the creation of ADUs. A setback of no more than four feet from the side and rear lot lines shall be required for an attached or detached ADU (Gov. Code, § 66314, subd. (d)(7)). Additional setback requirements may be required in the Coastal Zone if required by a local Coastal Program (Gov. Code, § 66329).

Are setbacks required for ADUs/JADUs created within an existing structure or replacing an existing structure?
No setback shall be required for an ADU or JADU created within an existing living area or accessory structure or an ADU created in a new structure in the same location and to the same dimensions as an existing structure (Gov. Code, § 66314, subd. (d)(7)).

Can a local agency impose front setbacks?
Yes. A local agency may apply front yard setbacks for ADUs, but front yard setbacks cannot preclude an ADU of at least 800 square feet from being built on the property, even if that ADU would exist partially or wholly within the front setback (Gov. Code, § 66321, subd. (b)(3)).

Can a local agency require an ADU to be built in an alternate location to comply with front setback requirements?
Maybe. If the ADU is a unit described under Government Code section 66314, then the local agency could have a requirement that the ADU be built in the backyard. If at least an 800 square foot unit cannot be built in the backyard, then the local agency must allow the ADU to be built within the front setback if necessary to accommodate the ADU (Gov. Code, § 66314, subd. (b)(1)). However, if the ADU is a unit described under Government Code section 66323, then the local agency cannot impose local standards, including front setbacks, and may not require the unit to be built in an alternate location (Gov. Code, § 66323, subd. (b)).

Is there a distance requirement between an ADU and other structures on the lot? State ADU Law does not address the distance between an ADU and other structures on a lot.

A local agency may impose objective development standards for the creation of some ADUs, ATTACHMENT 13

Page 545 of 569 ends

38 and all ADUs must comply with local building codes. However, development standards should not unreasonably restrict the creation of ADUs. (Gov. Code, § 66311.) Minimum distance or other requirements may not be applied if they would unreasonably restrict the creation of ADUs, unless they are a requirement of a Building or Fire Code (Gov. Code, § 66314, subd. (d)(8)).

Size Requirements and Restrictions
How is the square footage of an ADU or JADU calculated? In several places, State ADU Law refers to “square feet of interior livable space” or “square feet of livable space.“ (See, e.g., Gov. Code, §§ 66321, subd. (b)(2), (b)(3); 66323, subd. (a)(2)(A).) Government Code section 66313, subdivision (e) defines livable space as “a space in a dwelling intended for human habitation, including living, sleeping, eating, cooking, or sanitation.” Livable space includes bedrooms, bathrooms, kitchens, laundry rooms, closets, and interior stairs.

Can minimum lot size requirements be imposed on ADUs?
No. Local governments may not include minimum lot size requirements for ADUs (Gov. Code, § 66314, subd. (b)(1)).

Can lot coverage or floor area ratio preclude an ADU?
Limits on lot coverage or any floor area ratio requirements cannot preclude the creation of an ADU of at least 800 square feet of interior livable space that maintains four-foot rear and side setbacks. While floor area ratio and lot coverage requirements can be applied to other ADUs, such requirements must not unreasonably restrict the creation of ADUs. (Gov. Code, §§ 66321, subd. (b)(3); 66311.)
Can minimum and maximum unit sizes be established for ADUs? Yes. A local government may, by ordinance, establish minimum and maximum unit size requirements for both attached and detached ADUs; however, maximum unit size requirements must allow an ADU of at least 850 square feet of interior livable space, or 1,000 square feet of interior livable space for ADUs with more than one bedroom. (Gov. Code, § 66321, subd. (b)(2).) For local agencies without a compliant ADU ordinance, maximum unit sizes are 1,200 square feet of interior livable space for a new detached ADU (Gov. Code, § 66314, subd. (d)(4)) and up to 50 percent of the floor area of the existing primary dwelling for an attached ADU (at least 800 square feet of interior livable space) (Gov. Code, §§ 66314, subd. (d)(5); 66321, subd. (b)(3)). Finally, the local agency must not establish by ordinance a minimum square footage requirement that prohibits the development of an efficiency unit as defined in Health and Safety Code section 17958.1. An efficiency unit may be as small as 150 square feet in floor area (HSC, § 17958.1).

The conversion of an existing accessory structure or a portion of the existing primary residence to an ADU is not subject to unit size requirements. (Gov. Code, § 66323, subd. (a)(1).) Can open space or landscaping requirements be used to limit the size of or deny an ADU permit?
No. A local agency's open space zoning requirements may not deny an ADU of at least 800 square feet of interior livable space with four-foot rear and side setbacks (Gov. Code, § 66321, ATTACHMENT 13

Page 546 of 569 ends

39 subd. (b)(3)). In addition, 66323 Units are not subject to local open space and landscaping requirements in an ADU ordinance (Gov. Code, § 66323, subd. (b)).

Can a percentage of the primary dwelling be used to limit the maximum size of an attached ADU?
Yes. Local agencies may utilize a percentage (e.g., not greater than 50 percent) of the existing primary dwelling as a maximum unit size for attached ADUs, but only if it does not restrict an ADU’s size to less than 850 square feet of interior livable space, or 1,000 square feet of interior livable space for ADUs with more than one bedroom (Gov. Code, §§ 66314, subd. (d)(4); 66321 (b)(2)).

Can maximum unit sizes exceed 1,200 square feet for ADUs? Yes. Maximum unit sizes can exceed 1,200 square feet for ADUs through the adoption of a less stringent local ADU ordinance. State ADU Law does not limit the authority of local agencies to adopt less restrictive requirements for the creation of ADUs. (Gov. Code, § 66325, subd. (b).)
Solar Requirements
Are solar systems required for newly constructed ADUs?
Yes, newly constructed ADUs are subject to the California Energy Code requirement (excluding manufactured homes) to provide solar systems if the unit(s) is a newly constructed, detached ADU (though some exceptions apply). Per the California Energy Commission (CEC), the solar systems can be installed on the ADU or on the primary dwelling unit. ADUs that are constructed within existing space, or as an addition to existing homes, including detached additions where an existing detached building is converted from non-residential to residential space, are not subject to the California Energy Code requirement to provide solar systems.

Please refer to the CEC on this matter. For more information, see the CEC’s website at www.energy.ca.gov. You may email your questions to [email protected], or contact the Energy Standards Hotline at 800-772-3300. CEC memos can also be found on HCD’s website at https://www.hcd.ca.gov/policy-and-research/accessory-dwelling-units.

Tiny Homes
Are “tiny homes” considered ADUs?
Possibly. While State ADU Law does not specifically reference “tiny homes,” “tiny home” is an industry term that can mean different structures or vehicles. If the unit meets the definition of an ADU in Government Code section 66313, subdivision (a), it is subject to ADU Law. For more information on “tiny homes,” see Information Bulletin 2016-01 at https://www.hcd.ca.gov/policy-research/docs/hcd-bulletin-tiny-home-ib-2016-01.pdf. You may also contact HCD’s Division of Codes and Standards at [email protected].

ATTACHMENT 13

Page 547 of 569 ends

40 Types of ADUs
What are attached ADUs?
An attached ADU is a newly created (constructed) dwelling structure that structurally abuts (and connects to) an existing or proposed primary dwelling or accessory structure (Gov. Code, § 66314, subd. (d)(3)). This can be constructed on top of or below the primary dwelling. The attached ADU extends beyond the building plane of the existing or proposed primary dwelling unit. An attached ADU shall not exceed 50 percent of the existing primary dwelling’s floor area size. (Gov. Code, § 66314, subd. (d)(4).)
Examples of attached ADUs include, but are not limited to:
• An ADU addition to a duplex.
• An ADU built on top of an attached garage.
• An ADU built as a new second story of a single-family dwelling. • An ADU built in a newly constructed basement.

What are converted ADUs?
Converted ADUs are dwelling units that are created from existing space within proposed or existing primary dwelling units or existing accessory structures. For single family residences, the converted ADU is created from the proposed or existing space of the single-family residence or the existing space of an accessory structure. For multifamily dwelling structures, the converted ADUs are created from portions of the multifamily dwelling structures that are not used as livable space (i.e., storage rooms, passageways, etc.). (Gov. Code, § 66323, subds. (a)(1), (a)(3)(A).)
What standards apply to ADU conversions?
Objective standards related to height, lot coverage, landscape, design, development, and architectural standards in the local ADU ordinance do not apply to ADU conversions. However, since ADU conversions are created within an existing structure, the height of ADU conversions are limited to the dimension of the original structure. ADU conversions are not subject to setback requirements because they are created within an existing living area or are constructed in the same location and to the same dimensions as an existing structure. (Gov.

Code, § 66323, subds. (a)(1), (a)(3)(A).) ADU conversions are subject to all applicable building, health and safety, and fire standards for dwellings.

Can accessory structures be converted into an ADU?
Yes. The conversion of detached garages, sheds, and other existing detached accessory structures into ADUs is permitted by State ADU Law (Gov. Code, §§ 66314, subd. (d)(3); 66323, subds. (a)(1), (a)(4)).

What are Detached ADUs?
Detached ADUs are newly constructed dwelling units that are created on a lot with an existing or proposed single-family or multifamily dwelling structure but are detached from the primary dwelling (Gov. Code, §§ 66314, subd. (d)(3); 66323, subds. (a)(1), (a)(2), (a)(4)(A)).

Can detached ADUs on multifamily lots be attached to each other? Yes. Multifamily lots qualify for two detached, new construction ADUs on lots with a proposed ATTACHMENT 13

Page 548 of 569 ends

41 multifamily dwelling, or up to eight detached ADUs on a lot with an existing multifamily dwelling, not to exceed the total number of existing units on the lot. These ADUs are detached from the primary multifamily structure but do not have to be detached from each other or other accessory structures on the lot. (Gov. Code, § 66323, subd. (a)(4)(A).) For more information on 66323 Units, please see the “66323 Units” section above.

Unpermitted Structures and ADUs
Can a local agency deny a permit for an unpermitted ADU or JADU built prior to January 1, 2020?
Yes, but only with specific findings. A local agency shall not deny a permit for an unpermitted ADU that was constructed before January 1, 2020, due to the ADU being in violation of building standards, non-compliance with State ADU Law, or any local ordinance regulating ADUs (Gov.

Code, § 66311.7, subd. (a)). However, the local agency may deny the permit if the local agency makes a finding that correcting the violation is necessary to protect the health and safety of the public or occupants of the structure, or if the building is deemed substandard pursuant to section 17920.3 of the Health and Safety Code (Gov. Code, § 66311.7, subds. (b), (c)). Please note, corrections, requirements, or issues relating to the building code or health and safety are under the local agency’s discretion and purview. Applicants applying for a permit for a previously unpermitted dwelling should follow the local agency’s appeals process if they feel there is a discrepancy with corrections or denials issued by the local agency.

How does an applicant know what items are related to health and safety and may lead to needing corrections for an unpermitted ADU or JADU?
A local agency shall inform the public about the provisions of this section through public information resources, including permit checklists and the local agency’s internet website, which shall include both of the following: (1) a checklist of the conditions specified in Section 17920.3 of the Health and Safety Code that would deem a building substandard, and (2) information that, before applying for a permit, the homeowner may obtain a confidential third-party code inspection from a licensed contractor to determine the unit’s existing condition or potential scope of building improvements (Gov. Code, § 66311.7, subd. (d)(1), (d)(2)).3 Utilities
Can a local agency, special district, or water corporation require a new or separate connection for an ADU or JADU?
ADUs and JADUs created from the existing space of a primary dwelling or accessory structure pursuant to Government Code section 66323, subdivision (a)(1), cannot be required to install a new or separate connection unless the ADU or JADU is constructed concurrently with a new single-family dwelling. For all other ADUs and JADUs not created pursuant to Government Code section 66323, subdivision (a)(1), a new or separate connection directly from the utility to the ADU or JADU may be required (Gov. Code, § 66311.5, subds. (d), (e)). 3 See the Department of Consumer Affairs’ Contractors State License Board’s contractor license check resource, available at
https://www2.cslb.ca.gov/onlineservices/checklicenseII/checklicense.aspx.

ATTACHMENT 13

Page 549 of 569 ends

42 What if I have questions about electrical or gas utilities in connection with an ADU? HCD does not have authority over issues related to gas and electrical services. If an applicant believes that a local utility provider is not complying with connection requirements, fee schedules, or other issues that impact the creation of or service of an ADU, the applicant can file a complaint with the appropriate agency.

For privately owned public utilities such as PG&E, contact the California Public Utilities Commission (CPUC) by using CPUC’s online complaint form, by calling 1-800-649-7570, or by sending a letter to:

California Public Utilities Commission
505 Van Ness Avenue
San Francisco, CA 94102–3298
For publicly owned utilities such as SMUD, the applicant will need to contact the utility directly and follow their complaint process.

Zoning, Development, and Other Standards
Must ADUs be allowed jurisdiction-wide?
No. Local agencies may, by ordinance, designate where ADUs are permitted within zones that allow residential use. However, any limits on where ADUs are allowed may only be based on the adequacy of water and sewer service and on the impacts on traffic flow and public safety. (Gov. Code, § 66314, subd. (a).)
Local governments may not preclude the creation of ADUs altogether, and any limitation should be accompanied by detailed findings of fact explaining why ADU limitations are required and consistent with these factors. If a lot with a residence has been rezoned to a use that does not allow for residential uses, that lot is no longer eligible for an ADU. (Gov. Code, §§ 66314; 66323, subd. (a).) Impacts on traffic flow should consider factors like lower car ownership rates for ADUs. Local governments may develop alternative procedures, standards, or special conditions with mitigations for allowing ADUs in areas with potential health and safety concerns. Additionally, these designated areas cannot preclude units described in Government Code section 66323. If a local agency wishes to limit development of all ADUs, including units described in Government code section 66323, then the local agency may impose “a moratorium or similar restriction or limitation on housing development” as described in Government Code section 66300, subdivision (b)(1)(B), only with HCD’s approval. Note that any such moratorium or restriction may only be imposed to “specifically protect against an imminent threat to … health and safety….” (Gov. Code, § 66300, subd. (b)(1)(B)(i).) Can local agencies restrict ADUs based on Fire Hazard Severity Zones or other environmental hazards?
HCD understands that extreme weather conditions occur, and the threat of destructive wildfires cannot be ignored. Some agencies have used the High (HFHSZ) and Very High Fire Hazard Severity Zone (VHFHSZ) maps provided by CAL FIRE to mark areas where ADUs may be restricted or prohibited altogether. However, according to CAL FIRE, the HFHSZ and VHFHSZ maps are intended to govern building materials used in construction and defining zones of defensibility around structures. These are not intended to restrict housing development. The presence of a High Fire Hazard Severity Zone is not a conclusive rationale to warrant ATTACHMENT 13

Page 550 of 569 ends

43 restricting ADUs. A restriction based on the threat to public safety should be supported with findings detailing the impact of ADUs on public safety. (Gov. Code, § 66314, subd. (a).) Can an ADU application be denied due to lot density?
No. An ADU ordinance shall provide that ADUs do not exceed the allowable density on the lot (Gov. Code, § 66314, subd. (c)). Additionally, ADUs which conform to Government Code section 66314 shall not be considered to exceed the allowable density for the lot (Gov. Code, §§ 66314, subd. (c); 66319).

Can ADUs serve to qualify a project for a density bonus pursuant to State Density Bonus Law (SDBL), even though the general plan designation on the site allows less than five primary units?
Yes. A project initially qualifies under the SDBL when the project’s “total units,” as defined in the SDBL (i.e., the number of units in the project before a density bonus is received) meet or exceed five units (Gov. Code, § 65915, subd. (o)(8)). Although the SDBL makes no mention of ADUs in its text, it likewise does not expressly narrow the definition of a unit to exclude ADUs.

Provided they are counted within the total units of the project, ADUs are a type of housing unit that may be counted for the purposes of achieving the five total unit minimum.

If ADUs can be used to qualify a project under the SDBL’s minimum total unit requirement, can they likewise be used to calculate a density bonus? No. The calculation of a density bonus is based solely on a site’s maximum allowable residential density, which does not include ADUs. A density bonus is defined as “a density increases over the otherwise maximum allowable gross residential density…” (Gov. Code, § 65915, subd. (f)). Maximum allowable residential density is defined as “the greatest number of units allowed under the zoning ordinance, specific plan, or land use element of the general plan.” (Gov. Code, § 65915, subd. (o)(6).) As an example, if the zoning ordinance allows up to two units and the general plan allows up to three, the applicable maximum allowable residential density (i.e., base density) on the site is three units, even though the addition of two ADUs brings the “total units” to five (see question above). The density bonus would then be calculated on top of a base density of three units, not five.

Can a local government apply design and development standards? Yes. With an adopted ADU ordinance in compliance with State ADU Law, a local government may apply objective development and design standards that include, but are not limited to, parking, height, setback, landscape, architectural review, maximum size of a unit, and standards that prevent adverse impacts on any real property that is listed in the California Register of Historical Resources. These standards must be objective to allow ministerial review of an ADU. (Gov. Code, §§ 66314, subd. (b)(1); 66316.) ADUs created under Government Code section 66323 shall not be subject to design and development standards except for those that are specified in section 66323. (Gov. Code, § 66323, subds. (a), (b)).

ATTACHMENT 13

Page 551 of 569 ends

44 Can an ADU be built in a historic district or if the primary residence is subject to historic preservation?
Yes. ADUs are allowed within a historic district and on lots where the primary residence is subject to historic preservation. State ADU Law allows for a local agency to impose standards that prevent adverse impacts on any real property that is listed in the California Register of Historical Resources. (Gov. Code, § 66314, subd. (b)(1).) As with non-historic resources, an agency may impose objective standards that do not unreasonably restrict the creation of ADUs (Gov. Code, § 66311). Local agencies are encouraged to incorporate these standards into their ordinances and to submit these standards along with their ordinances to HCD.

How should demolition of garages in conjunction with the permitting of an ADU be handled by a local or permitting agency?
The local or permitting agency must review and issue the demolition permit and ADU permit at the same time. The applicant shall not be required to provide written notice or post a placard for the demolition of the garage unless the property is located in an architecturally and historically significant historic district. (Gov. Code, § 66314, subds. (e), (f).) ATTACHMENT 13

Page 552 of 569 ends

45 Resources
Changes to State ADU Laws
AB 1154
AB 1154 (Chapter 507, Statutes of 2025) made various changes to State ADU Law (Gov.

Code, § 66333) regarding JADUs and went into effect on January 1, 2026. This bill:
• Specifies that if a JADU has shared sanitation facilities with the primary structure, owner-occupancy will be required. If the JADU does not have shared sanitation facilities, owner-occupancy will not be required (Gov. Code, § 66333, subd. (b)). • Requires that JADUs can no longer be used as short-term rentals and, if rented, must now be rented for longer than 30 days (Gov. Code, § 66333, subd. (g)).

SB 9
SB 9 (Chapter 510, Statutes of 2025) made various changes to State ADU Law (Gov. Code, § 66326) regarding requirements for local jurisdictions when submitting ordinances to HCD and went into effect on January 1, 2026. This bill:
• Clarifies that if a local agency fails to submit an adopted ADU ordinance to HCD within the 60-day timeline or fails to respond to HCD’s findings regarding its ordinance within the 30-day timeline, that ordinance is null and void and the local agency must only apply State ADU Law when permitting ADUs (Gov. Code, § 66326, subd. (d)).

ATTACHMENT 13

Page 553 of 569 ends

46 SB 543
SB 543 (Chapter 520, Statutes of 2025) made various changes to State ADU Law (Gov. Code, §§ 66311, 66313, 66317, 66320, 66323; 66324; 66327; 66325; 66332 and added sections 66335; 66335.5; and 66339.5) regarding requirements for local jurisdictions when submitting ordinances to HCD and went into effect on January 1, 2026. This bill:
• Revises the definition of a “junior accessory dwelling unit” to require the size of a JADU to be no more than 500 square feet of interior livable space (Gov. Code, § 66313, subd. (d)).
• Expands HCD’s authority over Chapter 13 of Division 1 of Title 7 of the Government Code, including but not limited to review, adopt, amend, or repeal guidelines to additionally grant that authority with respect to terms, references, and standards for JADUs (Gov. Code, § 66311).
• Revises the limitations on impact fees to, instead, prohibit impact fees upon the development of an ADU that has 750 square feet of interior livable space or less or JADU that has 500 square feet of interior livable space or less, and to require that any impact fee on an ADU that has more than 750 square feet of interior livable space be charged proportionately in relation to the square footage of the primary dwelling unit (Gov. Code, § 66311.5, subds. (a) – (d)).
• Requires a permitting agency to determine whether an application for an ADU or JADU is complete and provide written notice of the determination not later than 15 business days after the permitting agency received the application (Gov. Code, § 66317, subd. (a)(2)(A)).
• Requires the permitting agency to provide the applicant with a list of incomplete items and a description of how the application can be made complete in the written notice if it is determined that an application is incomplete (Gov. Code, § 66317, subd. (a)(2)(B)). • Requires the permitting agency to provide a process for an application to be deemed complete and for applicants to appeal an incompleteness determination or denial, as provided, and requires the permitting agency to provide a final written determination by not later than 60 business days after receipt of the written appeal if a permit application is determined to be incomplete or is denied (Gov. Code, § 66317, subd. (d)(1)). • Specifies that an ADU or JADU that contains less than 500 square feet of interior livable space does not increase assessable space (Gov. Code, § 66311, subds. (d)). This is important to the calculation and imposition of school fees. • Revises size limitations to be based on the square footage of interior living space of the ADU (Gov. Code, § 66321, subds. (b)(2)(A), (b)(2)(B), and (b)(3)). • Specifies the number of allowable ADUs described under Government Code section 66323 per lot (Gov. Code, § 66323, subd. (a)).
• Clarifies that fire sprinklers are not required for a JADU if the primary residence does not have fire sprinklers and that the addition of a JADU cannot trigger the requirement for fire sprinklers (Gov. Code, § 66323, subd. (d)).
• Adds section 66333.5, which specifies that if a local agency fails to submit an adopted JADU ordinance to HCD within the 60-day timeline or fails to respond to HCD’s findings regarding their ordinance within the 30-day timeline, that ordinance is null and void and the local agency must only apply State ADU Law when processing applications for JADUs.

ATTACHMENT 13

Page 554 of 569 ends

47 New Government Code Sections Previous Government Code Sections 66311.5 66324
66313.5 66327
66311.7 66332
AB 462
AB 462 (Chapter 491, Statutes of 2025) made various changes to State ADU Law (Gov. Code, §§ 66328 and 66329) regarding requirements for the issuance of a certificate of occupancy during a declared state of emergency and creating an exception in coastal jurisdictions. This bill went into effect on October 10, 2025, as an urgency bill. This bill:
• Requires a local agency to issue a certificate of occupancy for an ADU constructed in a county that is subject to a proclamation of a state of emergency made by the Governor on or after February 1, 2025, even if the primary dwelling has not yet been issued a certificate of occupancy, if certain requirements are met, including that the primary dwelling was substantially damaged or destroyed by an event referenced in the state of emergency proclamation (Gov. Code, § 66328).
• Clarifies application processing when in a coastal zone by requiring a local government or the Coastal Commission, as specified, to either approve or deny a coastal development permit application for an ADU within 60 days of receiving a completed application (Gov. Code, § 66329, subd. (a)).

AB 130
AB 130 (Chapter 22, Statutes of 2025) made changes to the Civil Code and State ADU Law (Gov. Code, § 66323) regarding ADUs and went into effect on June 30, 2025. This bill:
• Specifies that reasonable restrictions in covenants, restrictions, and conditions, as described in the Civil Code, shall not include any fees or other financial requirements (Civil Code, § 714.3, subd. (b)).
• Removes Government Code section 66323, subdivision (g), which allowed the imposition of objective standards on ADUs in multifamily dwelling structures if the local agency had adopted an ADU ordinance by July 1, 2018.

AB 2533
AB 2533 (Chapter 834, Statutes of 2024) made various changes to State ADU Law (Gov.

Code, § 66311.7) regarding unpermitted ADUs and went into effect on January 1, 2025. This bill:
• Prohibits a local agency from denying a permit for an unpermitted ADU or JADU that was constructed before January 1, 2020, for building code violations, unless the local agency makes a finding that correcting the violation is necessary to comply with conditions that would otherwise deem a building substandard. • Requires a local agency to inform the public about the provisions prohibiting denial of a permit for an unpermitted ADU or JADU.
• Requires this information to include a checklist of the conditions that deem a building substandard and to inform homeowners that, before submitting a permit application, the ATTACHMENT 13

Page 555 of 569 ends

48 homeowner may obtain a confidential third-party code inspection from a licensed contractor.
• Prohibits a local agency from requiring a homeowner to pay impact fees or connection or capacity charges except under specified circumstances. • Authorizes an inspector from a local agency, upon receiving an application for a permit for a previously unpermitted ADU or JADU constructed before January 1, 2020, to inspect the unit for compliance with health and safety standards and provide recommendations to comply with health and safety standards. • Prohibits the local agency from penalizing an applicant for having the unpermitted ADU and would require the local agency to approve necessary permits to correct noncompliance with health and safety standards.

SB 1211
SB 1211 (Chapter 296, Statutes of 2024) made various changes to State ADU Law (Gov.

Code, §§ 66313, 66314, 66323) with regard to replacement parking and 66323 Units on lots with existing or proposed multifamily dwellings and went into effect on January 1, 2025. This bill:
• Defines “livable space” as a space in a dwelling intended for human habitation, as the term appears in Government Code sections 66313, subdivision (e), and 66323, subdivision (a)(3)(A).
• Specifies that uncovered, off-street parking spaces demolished in conjunction with the construction of an ADU do not need to be replaced.
• Authorizes up to eight detached ADUs on a lot with an existing multifamily dwelling, provided that the number of ADUs does not exceed the number of existing units on the lot.
• Prohibits a local agency from imposing any objective development standards on 66323 Units that are not authorized by the provisions of Government Code section 66323, subdivision (a).

SB 477
SB 477 (Chapter 7, Statutes of 2024) made changes to the numbering of the sections of Government Code for State ADU and JADU Laws. The bill went into effect on March 25, 2024.

ATTACHMENT 13

Page 556 of 569 ends

49 New Government Code Sections Previous Government Code Sections Article 1. General Provisions
66310 65852.150 (a)
66311 65852.150 (b)
66312 65852.150 (c)
66313 General Definition Section
65852.2 (j)
65852.22 (j)
Article 2. Accessory Dwelling Unit Approvals
66314 65852.2 (a)(1)(A),
(D)(i)-(xii),
(a)(4)-(5)
66315 65852.2 (a)(8)
66316 65852.2 (a)(6)
66317 65852.2 (a)(3),
(a)(7)
66318 65852.2 (a)(9)
65852.2 (a)(2)
66319 65852.2 (a)(10)
66320 65852.2 (b)
66321 65852.2 (c)
66322 65852.2 (d)
66323 65852.2 (e)
66324 65852.2 (f)
66325 65852.2 (g)
66326 65852.2 (h)
66327 65852.2 (i)
66328 65852.2 (k)
66329 65852.2 (l)
66330 65852.2 (m)
66331 65852.2 (n)
66332 65852.23.

Article 3. Junior Accessory Dwelling Units
66333 65852.22 (a)
66334 65852.22 (b)
66335 65852.22 (c)
66336 65852.22 (d)
66337 65852.22 (e)
66338 65852.22 (f)-(g)
66339 65852.22 (h)
Article 4. Accessory Dwelling Unit Sales
66340 65852.26 (b)
66341 65852.26 (a)
66342 65852.2 (a)(10)
Note: The statutory references below have been adjusted to the new numbering described above.

ATTACHMENT 13

Page 557 of 569 ends

50 AB 976 and AB 1033
AB 976 (Chapter 751, Statutes of 2023) and AB 1033 (Chapter 1033, Statutes of 2023) made changes to State ADU Law (Gov. Code, §§ 66310-66342) regarding the occupancy, sale, and separate conveyance of ADUs and went into effect on January 1, 2024. These bills:
• Removed the existing 2025 sunset prohibition on a local agency imposing an owneroccupancy requirement on any ADU and would instead prohibit a local agency from requiring owner-occupancy for an ADU (Gov. Code, § 66315). • Authorized a local agency to adopt a local ordinance to allow the separate conveyance of the primary dwelling unit and ADU(s) as condominiums, subject to certain conditions (Gov. Code, §§ 66340-66342). Specifically:
o Condominiums shall be created pursuant to the Davis-Stirling Common Interest Development Act.
o Condominiums shall be created in conformance with the Subdivision Map Act. o Requires a safety inspection of the ADU prior to recordation of the condominium plan.
o Requires lienholders’ consent prior to recordation of the subdivision map or condominium plan.
o The local agency shall provide notice to consumers regarding requirements, establishment of condominium, and lienholder consent.
o Requires homeowner notice to utilities.
o The owner of a separate interest in an existing planned development must obtain express written authorization from the association.

AB 1332
AB 1332 (Chapter 759, Statutes of 2023) added section 65852.27 to the Government Code to expedite the approval of ADUs and went into effect on January 1, 2024. This bill:
• Requires the local agency to develop a program for the preapproval of ADU plans by January 1, 2025. • Requires the local agency to accept ADU plan submissions for preapproval from any party and approve or deny applications pursuant to standards established in Government Code sections 66314-66342.
• Requires the local agency to post preapproved ADU plans and the contact information of the applicant on the local agency’s internet website. • Allows the local agency to also post plans pre-approved by other local or state agencies.
• Authorizes a local agency to charge a fee to an applicant for the preapproval of an ADU plan.
• Requires a local agency to approve or deny within 30 days an application for a detached ADU that utilizes either a plan preapproved by the local agency or another agency within the state, or a plan that is identical to a plan in a previously approved application for a detached ADU. The plans must be valid within the current triennial California Building Standards Code rulemaking cycle.

ATTACHMENT 13

Page 558 of 569 ends

51 AB 434
AB 434 (Chapter 740, Statutes of 2023) modified amended Government Code section 65585, subdivision (j), by adding State ADU Law (Gov. Code, §§ 66310-66342) and SB 9 (Gov. Code, §§ 65852.21, 66411.7), among others, to the list of laws that HCD is authorized to enforce, including HCD’s authority to notify a city, county, city and county, or the Attorney General when the planning agency of a city, county, or city and county fails to comply with those laws. The bill went into effect on January 1, 2024.

AB 345
AB 345 (Chapter 343, Statutes of 2021) built upon recent changes to State ADU Law, to require cities to allow the separate conveyance of ADUs from the primary dwelling in certain circumstances, provided they meet certain conditions, including those listed below, found in Government Code section 66341:
• The ADU or primary dwelling was built or developed by a qualified nonprofit (Gov.

Code, § 66341, subd. (a)).
• There is an enforceable restriction on the use of the property between the low-income buyer and nonprofit that satisfies the requirements of Section 402.1 of the Revenue and Taxation Code (Gov. Code, § 66341, subd. (b)).
• The entire property is subject to the affordability restrictions to assure that the ADU and primary dwelling are preserved for owner-occupied, low-income housing for 45 years and are sold or resold only to a qualified buyer (Gov. Code, § 66341, subd. (c)). • The property is held in a recorded tenancy in common agreement that meets certain requirements (Gov. Code, § 66341, subd. (c)).

AB 345 does not apply to JADUs, and local ordinances must continue to prohibit JADUs from being sold separately from the primary residence.

AB 3182
AB 3182 (Chapter 198, Statutes of 2020) built upon recent changes to ADU Law, specifically Government Code sections 66310-66342 and Civil Code Sections 4740 and 4741, to further address barriers to the development and use of ADUs and JADUs.

This legislation, among other changes, addressed the following:
• States that an application for the creation of an ADU or JADU shall be deemed approved (not just subject to ministerial approval) if the local agency has not approved or denied the completed application within 60 days (Gov. Code, § 66317, subd. (a)). • Requires ministerial approval of an application for a building permit within a residential or mixed-use zone to create one ADU and one JADU per lot (not one or the other), within the proposed or existing single-family dwelling, if certain conditions are met (Gov.

Code, § 66323, subd. (a)(1)(A)).

ATTACHMENT 13

Page 559 of 569 ends

52 • Provides for the rental or leasing of a separate interest ADU or JADU in a common interest development, notwithstanding governing documents that otherwise appear to prohibit renting or leasing of a unit, and without regard to the date of the governing documents (Civ. Code, §§ 4740, subd. (a); 4741, subd. (a)). • Provides that not less than 25 percent of the separate interest units within a common interest development be allowed as rental or leasable units (Civ. Code, § 4741, subd. (b)).

AB 68, AB 881, and SB 13
AB 68 (Chapter 655, Statutes of 2019), AB 881 (Chapter 659, Statutes of 2019), and SB 13 (Chapter 653, Statutes of 2019) built upon recent changes to State ADU and JADU Law and further address barriers to the development of ADUs and JADUs.

This legislation, among other changes, addresses the following:
• Prohibits local agencies from including in development standards for ADUs requirements on minimum lot size. (Gov. Code, § 66314, subd. (b)(1)). • Clarifies that areas designated by local agencies for ADUs may be based on the adequacy of water and sewer services, as well as on impacts on traffic flow and public safety (Gov. Code, § 66314, subd. (a)).
• Eliminates all owner-occupancy requirements by local agencies for ADUs approved between January 1, 2020, and January 1, 2025 (Gov. Code, § 66315). • Prohibits a local agency from establishing a maximum size of an ADU of less than 850 square feet, or 1,000 square feet if the ADU contains more than one bedroom and requires approval of a permit to build an ADU of up to 800 square feet (Gov. Code, § 66321, subds. (b)(2), (b)(3)).
• Clarifies that when ADUs are created through the conversion of a garage, carport or covered parking structure, replacement of off-street parking spaces cannot be required by the local agency (Gov. Code, § 66314, subd. (d)(11)). • Reduces the maximum ADU and JADU application review time from 120 days to 60 days (Gov. Code, §§ 66317, subd. (a); 66335, subd. (2)). • Clarifies that “public transit” includes various means of transportation that charge set fees, run on fixed routes, and are available to the public (Gov. Code, § 66313, subd. (m)).
• Establishes impact fee exemptions and limitations based on the size of the ADU. ADUs up to 750 square feet are exempt from impact fees, and ADUs that are 750 square feet or larger may be charged impact fees but only such fees that are proportional in size (by square foot) to those for the primary dwelling unit (Gov. Code, § 66311.5, subd. (c)(1)). • Defines an “accessory structure” to mean a structure that is accessory and incidental to a dwelling on the same lot (Gov. Code, § 66313, subd. (b)). • Authorizes HCD to notify the local agency if HCD finds that the local ADU ordinance is not in compliance with state law (Gov. Code, § 66326, subd. (b)(1)). • Clarifies that a local agency may identify an ADU or JADU as an adequate site to satisfy its Regional Housing Needs Allocation (RHNA) (Gov. Code, § 65583.1, subd. (a)). • Permits JADUs even where a local agency has not adopted an ordinance expressly authorizing them (Gov. Code, § 66335.5).

ATTACHMENT 13

Page 560 of 569 ends

53 • Allows a permitted JADU to be constructed within the walls of the proposed or existing single-family residence and eliminates the required inclusion of an existing bedroom and an interior entry into the single-family residence (Gov. Code, § 66333, subd. (d)). • Requires, upon application and approval, a local agency to delay enforcement against a qualifying substandard ADU for five years to allow the owner to correct the violation, so long as the violation is not a health and safety issue, as determined by the enforcement agency (Gov. Code, § 66331; HSC, § 17980.12).

AB 587, AB 670, and AB 671
In addition to the legislation listed above, AB 587 (Chapter 657, Statutes of 2019), AB 670 (Chapter 178, Statutes of 2019), and AB 671 (Chapter 658, Statutes of 2019) also have an impact on State ADU Law, particularly through Health and Safety Code section 17980.12.

These pieces of legislation, among other changes, address the following:
• AB 587 creates a narrow exemption to the prohibition for ADUs to be sold or otherwise conveyed separately from the primary dwelling by allowing deed-restricted sales to occur if the local agency adopts an ordinance. To qualify, the primary dwelling and the ADU are to be built by a qualified nonprofit corporation whose mission is to provide units to low-income households. (Gov. Code, § 66340, 66341.)
• AB 670 provides that covenants, conditions, and restrictions that either effectively prohibit or unreasonably restrict the construction or use of an ADU or JADU on a lot zoned for single-family residential use are void and unenforceable (Civ. Code, § 4751)). • AB 671 requires local agencies’ housing elements to include a plan that incentivizes and promotes the creation of ADUs that can offer affordable rents for very low-, low-, or moderate-income households and requires HCD to develop a list of state grants and financial incentives in connection with the planning, construction, and operation of affordable ADUs (Gov. Code, § 65583; HSC, § 50504.5)).

ATTACHMENT 13

Page 561 of 569 ends

54 Summary Table of Statutory Changes
Bill Statute Amended Section Year Effective
AB 670 (2019) Civil Code 4751 2020
AB 671 (2019) Government Code 65583 (c)(7) 2020
AB 671 (2019) Health and Safety Code 50504.5 2020
AB 3182 (2020) Civil Code 4740
4741 2021
AB 345 (2021) Government Code 65852.26 2022
SB 9 (2021) Government Code 65852.21
66411.7 2022
AB 1584 (2022) California Civil Code 714.3 2022
SB1069 (2016)
AB 2299 (2016)
SB 229 (2017)
AB 494 (2017)
AB 881 (2019)
AB 68 (2019)
SB 13 (2019)
AB 3182 (2020)
AB 345 (2021)
AB 2221 (2022)
SB 897 (2022)
AB 976 (2023)
AB 1033 (2023)
Government Code 65852.2 2023
AB 2406 (2016)
AB 881 (2019)
SB 897 (2022)
Government Code 65852.22 2023
SB 897 (2022) Health and Safety Code 17980.12 2023
AB 1332 (2023) Government Code 65852.27 2024
AB 434 (2023) Government Code 65585 (j) 2024
SB 477 (2024) Government Code
65852.150
65852.2
65852.22
65852.23
65852.26
2024
AB 2533 (2024) Government Code 66322 2025
SB 1211 (2024) Government Code
66313
66314
66323
2025
ATTACHMENT 13

Page 562 of 569 ends

55 AB 3057 (2024) Public Resources Code 21080.17 2025
AB 130 Government Code 66323 2025
AB 462 Government Code 66328
66329 2025
SB 543 Government Code
66311
66313
66317
66320
66323
66324
66327
66325
66332
66335
66335.5
66339.5
2026
SB 9 (2025) Government Code 66326 2026
AB 1154 (2025) Government Code 66333 2026
SB 1077 (2024) Public Resources Code 30500.5 2026
ATTACHMENT 13

Page 563 of 569 ends

CITY OF CARMEL-BY-THE-SEA
City Council
Staff Report
August 4, 2026

ORDERS OF BUSINESS
TO: Honorable Mayor and City Council Members
SUBMITTED BY: Brandon Swanson, Acting City Administrator APPROVED BY: Brandon Swanson, Acting City Administrator SUBJECT: Provide Direction Regarding a Potential Urgency Ordinance Addressing Home Hardening and Wildfire Safety Regulations Citywide
RECOMMENDATION:

Receive a presentation from staff and provide direction regarding whether to prepare an urgency ordinance establishing interim home hardening regulations applicable citywide.

BACKGROUND / SUMMARY:

BACKGROUND
Over the past year, the Wildfire Prevention Committee, including staff have evaluated opportunities to improve wildfire resilience throughout Carmel-by-the-Sea. One of those opportunities is strengthening regulations related to home hardening and defensible space. Council is being asked to consider four recommendations for an urgency ordinance to offer additional wildfire protection citywide while more permanent regulations are developed.

This discussion is intended to obtain policy direction only. No ordinance or resolution has been prepared for Council consideration at this meeting. Staff is requesting guidance regarding whether Council wishes to proceed with an urgency ordinance and, if so, which recommendations should be included. If directed to proceed, staff will prepare a draft urgency ordinance for Council consideration at the earliest possible meeting.

Page 564 of 569 ends

Three of the four recommendations would extend wildfire safety standards that already apply within Fire Hazard Severity Zones and Wildland-Urban Interface areas to all properties citywide. The remaining recommendation would remove an unintended regulatory barrier that discourages homeowners from installing fire-safe landscaping materials immediately adjacent to their homes.

DISCUSSION
City Council is being asked to consider the following four recommendations for inclusion in a potential urgency ordinance.

1. Gravel Adjacent to Structures
Purpose
Creating a noncombustible area immediately adjacent to structures is one of the most effective ways to reduce the risk of ember ignition during a wildfire. Gravel is widely recognized as a safe material for the first five feet surrounding a home because it does not ignite or contribute to fire spread.

Current Regulations
Throughout the City, including within the Fire Hazard Severity Zones and WildlandUrban Interface (WUI), site coverage is regulated by Title 17 of the Carmel Municipal Code. The City's zoning regulations distinguish between permeable, semi-permeable, and non-permeable site coverage, all of which count toward the maximum site coverage allowed on a property. Site coverage is generally limited to approximately 22 percent of a parcel's base floor area, subject to certain limited exemptions.

Gravel is classified as ‘permeable’ site coverage, along with materials such as decking, stairs, sand-set brick and pavers, garden walkways, small paving stones, and arbors.

Asphalt, concrete, mortared brick or stone, decomposed granite, balconies, walls, sheds, ponds, pools, and similar improvements are classified as ‘non-permeable’ site coverage and also count toward site coverage limits. Conversely, bark, wood chips, mulch, and similar organic landscape materials do not count toward site coverage calculations.

As a result, homeowners who replace combustible bark or mulch with fire-resistant gravel may unintentionally reduce the amount of allowable site coverage available on their property, creating a regulatory disincentive to install a safer landscaping material immediately adjacent to the home.

Proposed Urgency Ordinance
Exempt gravel from site coverage calculations when installed within five feet of a structure. This recommendation would remove an unintended barrier to creating the noncombustible "Zone 0" area recommended by CAL FIRE while maintaining existing site coverage limitations elsewhere on the property. All gravel would have to comply with the existing Design Guidelines (earth tone, muted colors, natural, etc.).

Page 565 of 569 ends

2. Firewood and Other Combustible Material Storage
Purpose
Firewood, lumber, and other combustible materials stored adjacent to homes are a common source of structural ignition during wildfires. Establishing consistent storage requirements throughout the City would reduce opportunities for embers to ignite combustible materials immediately adjacent to structures.

Current Regulations
Throughout the City, including within the Fire Hazard Severity Zones and WildlandUrban Interface (WUI), the Property Maintenance Code and Nuisance Code prohibit conditions that create fire hazards or involve the storage of materials in a manner likely to constitute a fire hazard. While these provisions provide general authority to address hazardous conditions, they do not establish detailed standards governing where firewood or combustible materials may be stored.

Within designated Fire Hazard Severity Zones and Wildland-Urban Interface areas, State regulations are considerably more specific. Firewood and combustible materials may not be stored beneath buildings, beneath decks, or under eaves, canopies, or other projections. Firewood piles must generally be located at least 30 feet from structures unless completely covered by a fire-resistant material. In addition, exposed wood piles located within the defensible space must maintain at least ten feet of clearance to bare mineral soil in all directions.

Proposed Urgency Ordinance
Apply the existing Fire Hazard Severity Zone and WUI storage requirements citywide so that all properties are subject to the same fire-safe storage standards regardless of their mapped hazard designation.

3. Ember-Resistant Vents
Purpose
Wind-driven embers entering attic and crawlspace vents have been identified as one of the leading causes of structure ignition during wildfires. Modern ember-resistant vent technology significantly reduces this risk by preventing embers and flames from entering the building envelope while still providing required ventilation.

Current Regulations
Within Fire Hazard Severity Zones and Wildland-Urban Interface areas, ventilation openings are required to be protected with Wildfire Flame and Ember Resistant vents approved and listed by the California State Fire Marshal, or other WUI-compliant vents tested in accordance with ASTM E2886. These products must successfully pass rigorous flame and ember intrusion testing.

Outside the Fire Hazard Severity Zones and WUI areas, ventilation openings are not required to meet wildfire performance standards. Instead, the Building Code only

Page 566 of 569 ends

regulates the size of vent openings, requiring a minimum opening dimension of 1/16 inch and a maximum of 1/4 inch.

Proposed Urgency Ordinance
Apply the existing Fire Hazard Severity Zone and WUI ember-resistant vent requirements throughout the City. As under current law, the standards would apply only when vents are replaced or altered and would not require immediate retrofitting of existing homes.

4. Fire-Resistant Windows
Purpose
Windows (glazing) are among the most vulnerable components of a structure during a wildfire. Heat exposure can cause ordinary glass to fail, allowing flames and embers to enter a building. Modern dual-pane tempered glazing significantly improves a home's ability to withstand wildfire exposure.

Current Regulations
Throughout the entire City, including within the Fire Hazard Severity Zones and Wildland-Urban Interface (WUI), window placement is regulated by the California Building Code based upon fire separation distance from adjacent property lines. For sprinklered homes, windows are generally prohibited within three feet of a property line, while unlimited glazing is permitted beyond three feet. For homes without automatic fire sprinklers, windows are prohibited within three feet of the property line, limited to 25 percent of the wall area between three and five feet, and unrestricted beyond five feet.

Within Fire Hazard Severity Zones and Wildland-Urban Interface areas, additional wildfire construction standards also apply. Exterior windows, windows within exterior doors, and skylights must be constructed using dual-pane glazing with at least one pane of tempered glass or other approved assemblies such as glass block. Wood-framed windows remain permissible provided the assembly achieves the required 20-minute fire-resistance performance. These requirements apply when windows are replaced or altered and are not retroactive. Existing State regulations also provide exceptions where compliance would conflict with the Secretary of the Interior's Standards for the Treatment of Historic Properties.

Proposed Urgency Ordinance
Apply the existing Fire Hazard Severity Zone and WUI glazing standards throughout the City. As with existing State law, the requirements would apply only when windows are replaced or altered, would not require immediate retrofitting of existing homes, and would continue to recognize historic preservation exceptions.

ADDITIONAL HOME HARDENING TOPICS
The Wildfire Prevention Committee also discussed several additional home hardening measures that could further improve wildfire resilience. The Committee concluded that

Page 567 of 569 ends

these topics involve broader architectural, historic preservation, and neighborhood character considerations and are therefore more appropriately addressed through the ongoing Design Traditions 1.5 project rather than through an urgency ordinance.

These topics include:
• Wood shake roofing materials
• Eaves and exposed rafters
• Deck construction
• Gate/Fencing materials and design
To reinforce the temporary nature of the urgency ordinance, staff recommends that any ordinance ultimately adopted include a sunset provision automatically repealing the ordinance upon adoption of the revised Design Guidelines and associated permanent regulations.

NEXT STEPS
No ordinance or resolution is presented for adoption as part of this agenda item.

Staff is requesting policy direction regarding:

1. Whether the Council wishes to proceed with preparation of an urgency ordinance;

2. Which of the four recommendations should be included in the ordinance; and

3. Whether Council wishes staff to evaluate any additional home hardening recommendations before returning with a draft ordinance.

If directed to proceed, staff will prepare an urgency ordinance consistent with Council's direction and return to the City Council at the earliest possible meeting for formal consideration.

ENVIRONMENTAL REVIEW
Providing policy direction does not constitute a project under the California Environmental Quality Act (CEQA). Any urgency ordinance prepared as a result of Council direction will be evaluated for CEQA compliance prior to Council consideration.

FISCAL IMPACT:

Preparation and implementation of the proposed urgency ordinance can be accomplished with existing staff resources. Any additional permit review or enforcement responsibilities are expected to be minimal and incorporated into existing departmental operations.

PRIOR CITY COUNCIL ACTION:

Page 568 of 569 ends

ATTACHMENTS:

None

Page 569 of 569 ends
← All documents from this meeting