Attachment A - Q1 2025 ADU Data — Palo Alto City Council, June 9, 2025

Table 1: Summary of ADU Permits from 2015-2025
Category 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 Q1 New ADU Applications
Filed1 10 9 28 55 75 78 136 151 122 136 42
Permits: Ready to Issue
(City Approved)2 8 5 12 39 62 46 112 127 135 131 29
Permits: Issued (Permit
Obtained)3 8 5 12 36 62 43 89 120

125 124 30
Permits: Final Inspection
Approved4 3 4 9 12 33 46 37 62 101 105 36
Permits Expired 1 1 1 6 2

Detached ADUs
(Submitted)5 20 35 52 52 80 80 48 53 19
Detached ADUs (Issued)5 8 24 41 33 55 64 57 48 9

Attached ADUs
(Submitted)6 8 20 23 20 56 44 43 47 12
Attached ADUs (Issued)6 4 11 21 9 34 32 40 52 12

Junior ADUs (Submitted)7 1 1 1 25 27 31 36 11
Junior ADUs (Issued)7 1 1 1 9 24 28 24 9
Category 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 Q1 Average Application
Processing Time (Days
Including Weekends)8
127 214 118 183 135 197 162 193 187 193 189
Average Construction
Time (Days Including
Weekends)9
578 751 330 287 173 262 455 431 496 519 481

City Impact Fees
Collected for New
ADUs10
$451,514 $402,012 $198,962 $44,057 $139,592 $540,453

$487,322 $498,101 $79,461

ADU Size Smallest 150 SF 159 SF 220 SF 208 SF 178 SF 192 SF 227 SF 165 SF 200 SF ADU Size Largest 900 SF 900 SF 1,031 SF 1,000 SF 1,218 SF 2,217 SF 1,000 SF 1,000 SF 997 SF Average ADU Size 470 SF 469 SF 383 SF 518 SF 550 SF 589 SF 571 SF 558 SF 579 SF

ADU Location
Relative to
Oregon
Expressway
North 46% 49% 52% 55% 49% 52% 41% 44% 38%
South 54% 51% 48% 45% 51% 48% 59% 56% 62%

Source: City of Palo Alto Accela Data January 2015 through March 2025

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.

Q1 2025 ADU/JADUs Submitted 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
or Space
# of
bdrms
ADU
Size
1 JADU North R-1 2/5/25 Pending
Resubmittal
x 1 286
2 JADU South R-1 2/25/25 Pending
Resubmittal
x 1 499
3 JADU South R-1 2/11/25 Pending
Resubmittal
x 0 389
4 JADU South R-1 1/7/25 Pending
Resubmittal
x x 1 200
5 JADU South R-1 (S) 1/14/25 In Plan Check x x 1 493 6 JADU South R-1 (S) 3/11/25 Pending
Resubmittal
x x 1 395
7 JADU South R-1 2/20/25 Pending
Resubmittal
x x 0 230
8 JADU North R-1 1/27/25 Pending
Resubmittal
x 1 265
9 JADU South R-1 2/20/25 In Plan Check x x 0 293 10 ADU South R-1 2/25/25 Pending
Resubmittal
x 1 748
11 ADU North R-1 1/28/25 Pending
Resubmittal
x x 2 944
12 ADU North R-1
(10000)
2/11/25 Pending
Resubmittal
x 0 787
13 ADU South R-1
(8000)
1/30/25 Pending
Resubmittal
x 2 800
14 ADU South R-1
(8000)
2/20/25 Pending
Resubmittal
x 2 781

Structure
or Space
# of
bdrms
ADU
Size
15 ADU South R-1 2/20/25 Pending
Resubmittal
x x 2 400
16 ADU South R-1 2/10/25 In Plan Check x x 1 825 17 ADU South R-1
(8000)
1/10/25 In Plan Check x 2 728
18 ADU South RM-15 2/12/25 Pending
Resubmittal
x x 2 680
19 ADU South R-1 2/12/25 Pending
Resubmittal
x 1 560
20 ADU North R-1
(10000)
2/3/25 Pending
Resubmittal
x 1 718
21 ADU North R-1 1/30/25 Pending
Resubmittal
x 1 647
22 ADU North R-1 2/18/25 Pending
Resubmittal
x 1 430
23 ADU North R-1 3/5/25 Pending
Resubmittal
x x 1 453
24 ADU South R-1 2/21/25 Pending
Resubmittal
x 1 545
25 ADU South R-1
(7000)
1/28/25 Pending
Resubmittal
x 1 558
26 ADU North R-1 1/13/25 In Plan Check x 1 517 27 ADU North R-1 (S) 2/4/25 Incomplete x 2 799 28 ADU South R-1 2/6/25 Pending
Resubmittal
x 2 745
29 ADU North R-1 2/24/25 Pending
Resubmittal
x 1 747
30 ADU South R-1 3/13/25 In Plan Check x 1 796

Structure
or Space
# of
bdrms
ADU
Size
31 ADU South R-1
(8000)(S)
3/27/25 In Plan Check x 1 750
32 ADU North R-1 3/18/25 Submitted x 0 826
33 ADU North R-1 3/27/25 In Plan Check x 0 667 34 ADU South R-1 (8000) 3/19/25 In Plan Check x 2 997 35 ADU South R-1 (8000) 3/20/25 In Plan Check x 1 527 36 ADU South R-1 3/31/25 In Plan Check x x 0 308 37 ADU North R-1 3/17/25 In Plan Check x x 0 380 38 JADU North R-1
(10000)
3/31/25 Submitted x 0 407
39 ADU North R-1 3/19/25 In Plan Check x 0 800 40 JADU South R-1 3/19/25 In Plan Check x 0 288 41 JADU South R-1 3/31/25 In Plan Check x 0 420 42 JADU South R-1 3/19/25 In Plan Check x 2 700

Palo Alto City CouncilJune 9, 2025

Palo Alto City Council
June 9, 2025