Table 1: Summary of ADU Permits from 2015-2024 (Q1)
Category 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 (Q1)
New ADU Applications
Filed1 10 9 28 55 75 78 136 151 122 38
Permits: Ready to Issue
(City Approved)2 8 5 12 39 62 46 112 127 135 30
Permits: Issued (Permit
Obtained)3 8 5 12 36 62 43 89 120
125 24
Permits: Final Inspection
Approved4 3 4 9 12 33 46 37 62 101 22
Permits Expired 1 1 1 1
Detached ADUs
(Submitted)5 20 35 52 52 80 80 48 14
Detached ADUs (Issued)5 8 24 41 33 55 64 57 9
Attached ADUs
(Submitted)6 8 20 23 20 56 44 43 19
Attached ADUs (Issued)6 4 11 21 9 34 32 40 10
Junior ADUs (Submitted)7 1 1 1 25 27 31 5
Junior ADUs (Issued)7 1 1 1 9 24 28 5
Category 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024(Q1) Average Application
Processing Time (Days
Including Weekends)8
127 214 118 183 135 197 162 193 187 170
Average Construction
Time (Days Including
Weekends)
9 578 751 330 287 173 262 455 431 496 426
City Impact Fees
Collected for New
ADUs10
$451,514 $402,012 $198,962 $44,057 $139,592 $540,453
$487,322 $42,774
ADU Size Smallest 150 SF 159 SF 220 SF 208 SF 178 SF 192 SF 227 SF 196 SF ADU Size Largest 900 SF 900 SF 1,031 SF 1,000 SF 1,218 SF 2,217 SF 1000 SF 1000 SF Average ADU Size 470 SF 469 SF 383 SF 518 SF 550 SF 589 SF 571 SF 554 SF
ADU Location
Relative to
Oregon
Expressway
North 46% 49% 52% 55% 49% 52% 41% 58%
South 54% 51% 48% 45% 51% 48% 59% 42%
Source: City of Palo Alto Accela Data January 2015 through March 2024
Notes:
1. Any ADU/JADU Application SUBMITTED for the year
2. Any ADU/JADU application Permit 'READY TO Issue' for the year (regardless of when it was submitted)
3. Any ADU/JADU Permit ISSUED for the year (regardless of when it was submitted)
4. Any ADU/JADU Permit receiving a Final Inspection (Ready to Occupy) for the year, regardless of when the application wassubmitted. Years 2015-2017 data point not available.
5. Any Detached ADU Permit Application submitted for the year/Any Detached ADU Permit Issued for the year, regardless of when the application was submitted. Years 2015-2016 data point not available.
6. Any Attached ADU Permit Application submitted for the year/Any Attached ADU Permit Issued for the year, regardless of when the application was submitted. Years 2015-2016 data point not available.
7. Any JADU Permit Application submitted for the year/Any JADU Permit Issued for the year, regardless of when the application was submitted. Years 2015- 2016 data point not available.
8. Average number of days from permit application submittal to when permit is approved and ready to issue. This average includes weekends and days application is pending due to applicant preparation of resubmittal or additional information from applicant.
9. Average number of days from permit issued to final inspection completed. This average includes weekends and days staff is waiting for applicant to schedule the next required inspection; it also includes time related to the construction of a primary residence when the J/ADU is built at the same time.
10. Impact Fees collected for ADU’s permitted for the year. Years 2015-2016 data point not available.
ADU Applications Submitted for CY 2024 (Q1) New Construction Conversion Type of Conversion # of apps
Dwelling
Type
Project
Location
Zoning
District
Date
Filed
Application
Status Attached Detached Attached Detached Garage
Other Acc.
Structure/Space
# of
bdrms ADU Size
1 ADU North R-1 2/9/24 Incomplete x 1 324
2 ADU North
R-1
(10000)
3/19/24
Pending
Resubmittal x 2 868
3 JADU North R-1
3/26/24
Pending
Resubmittal x x 1 196
4 ADU North R-1
2/20/24
Pending
Resubmittal x 1 536
5 ADU North R-1
2/15/24
In Plan
Check x x 2 720
6 ADU North R-1
3/13/24
Pending
Resubmittal x 2 749
7 ADU North RM-15 1/8/24
Pending
Resubmittal x 1 566
8 ADU North R-1 2/1/24
Pending
Resubmittal x 1 514
9 ADU North R-1
3/13/24
Pending
Resubmittal x x 0 392
10 ADU South R-1 2/7/24
In Plan
Check x 2 749
11 ADU South R-1
2/29/24
In Plan
Check x 1 750
12 ADU South R-1
3/28/24
Pending
Resubmittal x 2 1,000
ADU Applications Submitted for CY 2024 (Q1) New Construction Conversion Type of Conversion # of apps
Dwelling
Type
Project
Location
Zoning
District
Date
Filed
Application
Status Attached Detached Attached Detached Garage
Other Acc.
Structure/Space
# of
bdrms ADU Size
13 ADU South R-1
2/29/24
Pending
Resubmittal x 2 749
14 ADU South R-1
1/12/24
Pending
Resubmittal x 1 461
15 ADU South R-1
1/29/24
Permit
Issued x 2 750
16 ADU South R-1 3/5/24
Pending
Resubmittal x 2 805
17 ADU South
R-1
(7000)
1/16/24
Pending
Resubmittal x x 1 238
18 ADU South
R-1
(8000)
3/20/24
Pending
Resubmittal x 1 523
19 ADU South
R-1
(8000) 1/2/24
Permit
Issued x x 0 485
20 ADU South
R-1
(8000)
3/12/24
Pending
Resubmittal x 0 608
21 ADU South R-1
3/21/24
Pending
Resubmittal x 2 750
22 ADU North RM-15 3/5/24 Submitted x x 0 645
23 ADU South R-1
2/29/24
Pending
Resubmittal x x 1 402
24 ADU South R-1 (S)
2/14/24
Pending
Resubmittal x x 1 519
ADU Applications Submitted for CY 2024 (Q1) New Construction Conversion Type of Conversion # of apps
Dwelling
Type
Project
Location
Zoning
District
Date
Filed
Application
Status Attached Detached Attached Detached Garage
Other Acc.
Structure/Space
# of
bdrms ADU Size
25 ADU South R-1 (S) 3/6/24
Pending
Resubmittal x 2 750
26 ADU South R-1 2/1/24
Pending
Resubmittal x 1 600
27 ADU South RE
3/15/24 Incomplete x x 1 675
28 ADU North
R-1
(10000) 3/6/24
Pending
Resubmittal x x 1 524
29 ADU North R-1
1/30/24
Pending
Resubmittal x x 1 456
30 JADU South R-1
1/11/24
Pending
Resubmittal x x 1 478
31 ADU North R-1 2/2/24
Pending
Resubmittal x 1 300
32 JADU South R-1
2/13/24
In Plan
Check x x 1 357
33 ADU South R-1
2/27/24
In Plan
Check x x 1 337
34 JADU South
R-1
(8000)
3/27/24
Pending
Resubmittal x x 0 280
35 ADU South R-1
3/19/24
Pending
Resubmittal x 2 743
ADU Applications Submitted for CY 2024 (Q1) New Construction Conversion Type of Conversion # of apps
Dwelling
Type
Project
Location
Zoning
District
Date
Filed
Application
Status Attached Detached Attached Detached Garage
Other Acc.
Structure/Space
# of
bdrms ADU Size
36 ADU North R-1
2/10/24
Pending
Resubmittal x x 1 412
37 ADU North R-2
3/18/24
In Plan
Check x x 1 360
38 JADU North R-1
2/12/24
In Plan
Check x 1 493