Table 1: Summary of ADU Permits from Calendar Year 2015-2023 Category 2015 2016 2017 2018 2019 2020 2021 2022 2023 (Q1-Q3) New ADU Applications
Filed1 10 9 28 55 75 78 136 151 95
Permits: Ready to Issue
(City Approved)2 8 5 12 39 62 46 112 127 100
Permits: Issued (Permit
Obtained)3 8 5 12 36 62 43 89 120
89 Permits: Final
Inspection Approved4 3 4 9 12 33 46 37 62 79
Permits Expired 1 1 2
Detached ADUs
(Submitted)5 20 35 52 52 80 80 43
Detached ADUs
(Issued)5 8 24 41 33 55 64 40
Attached ADUs
(Submitted)6 8 20 23 20 56 44 28
Attached ADUs
(Issued)6 4 11 21 9 34 32 29
Junior ADUs
(Submitted)7 1 1 1 25 27 24
Junior ADUs (Issued)7 1 1 1 9 24 20
Average Application
Processing Time (Days
Including Weekends)8
127 214 118 183 135 197 162 193 215
Average Construction
Time (Days Including
Weekends)9
578 751 330 287 173 262 455 431 474
Category 2015 2016 2017 2018 2019 2020 2021 2022 2023
City Impact Fees
Collected for New
ADUs10
$451,514 $402,012 $198,962 $44,057 $139,592 $540,453
$264,712
ADU Size Smallest 150 SF 159 SF 220 SF 208 SF 178 SF 192 SF 159 SF ADU Size Largest 900 SF 900 SF 1,031 SF 1,000
SF 1,218 SF 2,217 SF 999 SF
Average ADU Size 470 SF 469 SF 383 SF 518 SF 550 SF 589 SF 570 SF
ADU Location
Relative to
Oregon
Expressway
North 46% 49% 52% 55% 49% 52% 44%
South 54% 51% 48% 45% 51% 48% 56%
Source: City of Palo Alto Accela Data January 2015 through June 2023 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.
ADUs/JADUs Submitted in Q1 of 2023 New Construction Conversion Type of Conversion
# of
apps
Dwelling
Type
Project
Location
Zoning
District Date Filed Application
Status Attached Detached Attached Detached Garage
Other
Accessory
Structure/Space
# of
Bedrooms
ADU
Size
1 JADU NORTH R-1
01/25/2023
Pending
Resubmittal x x 1 281
2 ADU NORTH R-1
(10000)
02/09/2023
Pending
Resubmittal x 1 810
3 ADU SOUTH R-1
(8000)(S)
01/03/2023
In Plan
Check x x 1 325
4 ADU SOUTH R-1
03/07/2023 Incomplete x 2 748
5 JADU SOUTH R-1
03/15/2023
Pending
Resubmittal x 1 499
6 ADU SOUTH R-1
02/15/2023
Pending
Resubmittal x 1 440
7 ADU SOUTH R-1
03/23/2023
Pending
Resubmittal x 1 797
8 ADU SOUTH R-1
03/09/2023
Pending
Resubmittal x x 1 391
9 ADU NORTH R-1
01/10/2023 Incomplete x 1 538
10 JADU SOUTH R-1
02/02/2023
Pending
Resubmittal x x 1 358
11 ADU SOUTH R-1
01/10/2023
In Plan
Check x 2 800
12 JADU NORTH RMD
(NP)
01/11/2023
Pending
Resubmittal x x 0 284
13 ADU NORTH RMD
(NP)
01/11/2023
Pending
Resubmittal x x 2 836
14 ADU SOUTH R1-
(8000)(S)
01/11/2023
Pending
Resubmittal x 1 471
15 JADU SOUTH R-1
(10000)
03/28/2023
Pending
Resubmittal x 1 500
16 ADU SOUTH R-1
(10000)
03/28/2023
Pending
Resubmittal x 1 921
17 ADU SOUTH R-1
02/06/2023
Pending
Resubmittal x 1 480
18 JADU SOUTH R-1
(10000)
03/29/2023
Pending
Resubmittal x 1 495
19 ADU NORTH R-1
(10000)
01/23/2023
Pending
Resubmittal x x 1 523
20 JADU NORTH R-1
03/17/2023
Pending
Resubmittal x 0 401
21 JADU SOUTH R-1
02/13/2023
Pending
Resubmittal x 1 479
22 JADU SOUTH R-1
(8000)
03/16/2023
Pending
Resubmittal x 1 534
23 ADU SOUTH R-1
02/16/2023
In Plan
Check x x 1 264
24 ADU SOUTH R-1
(8000)
03/09/2023
Pending
Resubmittal x 2 750
25 ADU NORTH RM-30
03/10/2023
Pending
Resubmittal x 0 315
26 ADU SOUTH R-1
02/02/2023
Pending
Resubmittal x 1 307
27 ADU NORTH RM-30
03/06/2023
Pending
Resubmittal x 2 818
28 JADU SOUTH R-1
03/10/2023
In Plan
Check x x 1 360
29 ADU SOUTH R-1
(10000)
01/30/2023
Pending
Resubmittal x x 1 810
ADUs/JADUs Submitted in Q2 of 2023 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
Bedrooms
ADU
Size
1 JADU South R-1
04/25/2023
Pending
Resubmittal x 1 497
2 JADU North R-1
04/11/2023
Pending
Resubmittal x 0 236
3 JADU South R-1
(8000)
04/20/2023
Pending
Resubmittal x 1 500
4 JADU North R-1
05/02/2023 Incomplete x x 1 230
5 JADU South R-1
(8000)
05/12/2023
In Plan
Check x x 1 492
6 JADU North R-1
05/24/2023
Pending
Resubmittal x 1 499
7 JADU North R-1
06/08/2023
Pending
Resubmittal x x 1 367
8 JADU South RM-15
06/19/2023
Pending
Resubmittal x 1 500
9 JADU North R-1
06/27/2023
Pending
Resubmittal x 1 498
10 ADU North R-1 (S)
06/29/2023
Pending
Resubmittal x 2 609
11 ADU South R-1
(10000)
06/20/2023
Pending
Resubmittal x 1 794
12 ADU South R-1
06/20/2023
Pending
Resubmittal x 1 750
13 ADU North RM-15
06/09/2023
Pending
Resubmittal x x 3 998
14 ADU North R-1
06/12/2023
Pending
Resubmittal x x 1 640
15 ADU North R-1
06/15/2023
Permit
Issued x 1 159
16 ADU South R1
05/25/2023
Pending
Resubmittal x 1 795
17 ADU South RE
06/01/2023
Pending
Resubmittal x 2 982
18 ADU South R-1
06/02/2023
Pending
Resubmittal x 1 615
19 ADU North R-1
06/05/2023
In Plan
Check x 1 749
20 ADU North R-1
06/05/2023
Pending
Resubmittal x 1 726
21 ADU North RMD
(NP)
06/06/2023
Pending
Resubmittal x 2 808
22 ADU North R-1
06/07/2023
Pending
Resubmittal x 1 999
23 ADU South OS
05/17/2023
Pending
Resubmittal x x 1 584
24 ADU North R-1
05/18/2023
Pending
Resubmittal x 2 799
25 ADU South R-1
05/02/2023
Pending
Resubmittal x x 0 339
26 ADU North R-1
05/10/2023 Incomplete x 1 845
27 ADU North R-1
04/27/2023
Permit
Issued x x 1 564
28 ADU North R-1
(10000)
04/28/2023
Pending
Resubmittal x 1 578
29 ADU South R-1
04/20/2023
Pending
Resubmittal x x 0 324
30 ADU North R-1
04/27/2023
Permit
Issued x 2 800
31 ADU North R-1
04/03/2023
Pending
Resubmittal x x 1 252
32 ADU South R-1
04/07/2023
Pending
Resubmittal x 1 498
33 ADU North R-1
04/10/2023
Permit
Issued x x 0 400
34 ADU North R-1
(10000)
04/17/2023 Submitted x 0 797
ADUs/JADUs Submitted in Q3 of 2023 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
Bedrooms
ADU
Size
1 JADU SOUTH R-1
(8000)
07/06/2023
Pending
Resubmittal x 1 496
2 JADU NORTH R-1
07/27/2023
Pending
Resubmittal x 1 498
3 JADU SOUTH R-1
08/24/2023
Pending
Resubmittal x 1 388
4 JADU NORTH RMD
(NP)
08/01/2023
Pending
Resubmittal x 1 385
5 JADU NORTH R-1
08/09/2023
Pending
Resubmittal x 1 495
6 JADU SOUTH R-1
08/10/2023
Pending
Resubmittal x 1 416
7 ADU SOUTH R-1
08/21/2023
Pending
Resubmittal x x 1 402
8 ADU NORTH RMD
(NP)
08/01/2023
Pending
Resubmittal x 1 378
9 ADU SOUTH R-1
08/07/2023
Pending
Resubmittal x 1 778
10 ADU NORTH R-1
08/09/2023
Pending
Resubmittal x x 2 642
11 ADU NORTH R-1
08/25/2023
Pending
Resubmittal x 2 869
12 ADU NORTH R-1
08/29/2023
Pending
Resubmittal x 1 749
13 ADU SOUTH R-1
(8000) 08/30/2023
Pending
Resubmittal x 2 973
14 ADU SOUTH R-1 09/12/2023
Pending
Resubmittal x x 1 333
15 ADU NORTH R-1 09/12/2023
Pending
Resubmittal x 1 366
16 ADU SOUTH R-1 09/13/2023
Pending
Resubmittal x x 1 335
17 ADU SOUTH R-1 09/13/2023
Pending
Resubmittal x 1 456
18 ADU SOUTH R-1 09/14/2023
Pending
Resubmittal x x 1 499
19 ADU SOUTH R-1 09/14/2023
Pending
Resubmittal x x 1 499
20 ADU SOUTH R-1
(8000) 09/14/2023
Pending
Resubmittal x 2 749
21 ADU SOUTH R-1 09/21/2023
Pending
Resubmittal x x 1 590
22 ADU SOUTH R-1
(7000) 09/29/2023
In Plan
Check x 2 750
23 ADU SOUTH 07/27/2023
Pending
Resubmittal x 1 672
24 ADU NORTH R-2 07/05/2023
In Plan
Check x 1 677
25 ADU SOUTH R-1 07/11/2023
Pending
Resubmittal x x 1 600
26 ADU SOUTH R-1 07/11/2023
In Plan
Check x 1 748
27 ADU SOUTH R-1 (S) 07/12/2023
Pending
Resubmittal x x 1 467
28 ADU NORTH R-
1(10000) 07/13/2023
Pending
Resubmittal x 1 789
29 ADU SOUTH R-1
(8000)(S) 07/18/2023
Pending
Resubmittal x 2 275
30 ADU NORTH R-1 07/21/2023
Pending
Resubmittal x x 1 308
31 ADU SOUTH R-1
(10000) 07/25/2023
Pending
Resubmittal x 1 826
32 ADU NORTH RE 07/27/2023 Submitted x 2 997
R-1