Table 1: Summary of ADU Permits from 2015-2023
Category 2015 2016 2017 2018 2019 2020 2021 2022 2023
New ADU Applications
Filed1 10 9 28 55 75 78 136 151 122
Permits: Ready to Issue
(City Approved)2 8 5 12 39 62 46 112 127 135
Permits: Issued (Permit
Obtained)3 8 5 12 36 62 43 89 120
125
Permits: Final
Inspection Approved4 3 4 9 12 33 46 37 62 101
Permits Expired 1 1 1
Detached ADUs
(Submitted)5 20 35 52 52 80 80 48
Detached ADUs
(Issued)5 8 24 41 33 55 64 57
Attached ADUs
(Submitted)6 8 20 23 20 56 44 43
Attached ADUs
(Issued)6 4 11 21 9 34 32 40
Junior ADUs
(Submitted)7 1 1 1 25 27 31
Junior ADUs (Issued)7 1 1 1 9 24 28
Average Application
Processing Time (Days
Including Weekends)8
127 214 118 183 135 197 162 193 187
Average Construction
Time (Days Including
Weekends)9
578 751 330 287 173 262 455 431 496
City Impact Fees
Collected for New
ADUs10
$451,514 $402,012 $198,962 $44,057 $139,592 $540,453
$487,322
ADU Size Smallest11 150 SF 159 SF 220 SF 208 SF 178 SF 192 SF 227SF ADU Size Largest11 900 SF 900 SF 1,031 SF 1,000 SF 1,218 SF 2,217 SF 1000 SF Average ADU Size11 470 SF 469 SF 383 SF 518 SF 550 SF 589 SF 571SF
ADU Location
Relative to
Oregon
Expressway11
North 46% 49% 52% 55% 49% 52% 41%
South 54% 51% 48% 45% 51% 48% 59%
Source: City of Palo Alto Accela Data January 2015 through December 31, 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.
11. For new applications filed in the reporting period.
ADU Applications Submitted for CY 2023 (Q1-Q4) 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
12/26/2023
In Plan
Check x 1 800
2 JADU NORTH R-1
12/21/2023 Submitted x 0 382
3 ADU NORTH RM-15
12/20/2023
Pending
Resubmittal x x 1 464
4 ADU SOUTH R-1
12/15/2023
In Plan
Check x x 0 708
5 ADU SOUTH R-1
(7000)
12/13/2023
Pending
Resubmittal x 1 378
6 JADU NORTH R-2
12/12/2023
Pending
Resubmittal x x 2 400
7 ADU SOUTH R-1
12/11/2023
Pending
Resubmittal x 1 800
8 ADU SOUTH R-1
12/07/2023
Pending
Resubmittal x x 1 540
9 ADU SOUTH R-1
11/29/2023
Pending
Resubmittal x 2 748
10 ADU SOUTH R-1
(7000)(S)
11/27/2023
Pending
Resubmittal x 2 750
11 ADU SOUTH R-1
11/22/2023
Pending
Resubmittal x 1 481
12 ADU NORTH R-1
11/22/2023
Pending
Resubmittal x 2 750
13 ADU SOUTH R-1
(7000)
11/17/2023
Pending
Resubmittal x 1 385
14 ADU SOUTH R-1
(8000)(S)
11/14/2023
Pending
Resubmittal x 2 791
15 ADU NORTH R-1
(10000)
11/13/2023
Pending
Resubmittal x x 1 500
16 ADU SOUTH R-1
11/13/2023
Pending
Resubmittal x 2 784
17 ADU SOUTH R-1
11/09/2023
Pending
Resubmittal x 2 692
18 ADU NORTH R-1
11/06/2023
Pending
Resubmittal x x 2 749
19 ADU SOUTH R-1
11/06/2023
Pending
Resubmittal x 1 749
20 JADU NORTH R-1
11/01/2023
Pending
Resubmittal x x 1 386
21 JADU NORTH R-1
11/01/2023
Pending
Resubmittal x x 1 498
22 ADU NORTH R-1
10/24/2023
In Plan
Check x 1 501
23 JADU SOUTH R-1
10/19/2023
In Plan
Check x 0 227
24 JADU SOUTH R-1
10/17/2023
Pending
Resubmittal x 1 500
25 ADU SOUTH R-1
(8000)
10/06/2023
Permit
Issued x x 0 374
26 ADU SOUTH R-1
(7000)
09/29/2023
Pending
Resubmittal x 2 750
27 ADU SOUTH R-1
09/21/2023
Pending
Resubmittal x x 1 590
28 ADU SOUTH R-1
09/14/2023
In Plan
Check x x 1 499
29 JADU SOUTH R-1
09/14/2023
In Plan
Check x x 1 499
30 ADU SOUTH R-1
(8000)
09/14/2023
Pending
Resubmittal x 2 749
31 ADU SOUTH R-1
09/13/2023 Incomplete x x 1 372
32 ADU SOUTH R-1
09/13/2023
In Plan
Check x 1 456
33 ADU SOUTH R-1
09/12/2023
Pending
Resubmittal x x 1 333
34 ADU NORTH R-1
09/12/2023
Pending
Resubmittal x 1 366
35 ADU SOUTH R-1
(8000)
08/30/2023
In Plan
Check x 2 973
36 ADU NORTH R-1
08/29/2023
Pending
Resubmittal x 1 749
37 ADU NORTH R-1
08/25/2023
Pending
Resubmittal x 2 869
38 JADU SOUTH R-1
08/24/2023
Permit
Issued x 1 388
39 ADU SOUTH R-1
08/21/2023
Pending
Resubmittal x x 1 402
40 JADU SOUTH R-1
08/10/2023
Pending
Resubmittal x 1 416
41 JADU NORTH R-1
08/09/2023
Permit
Issued x 1 495
42 ADU NORTH R-1
08/09/2023
Permit
Issued x x 2 642
43 ADU SOUTH R-1
08/07/2023
Pending
Resubmittal x 1 778
44 ADU NORTH RMD
(NP)
08/01/2023
Pending
Resubmittal x 1 378
45 JADU NORTH RMD
(NP)
08/01/2023
Pending
Resubmittal x 1 385
46 JADU NORTH R-1
07/27/2023
Permit
Issued x 1 498
47 ADU SOUTH R-1
07/27/2023
Permit
Issued x 1 672
48 ADU SOUTH RE
07/27/2023 Submitted x 2 997
49 ADU NORTH R-1
(10000)
07/26/2023
Permit
Issued x x 1 800
50 ADU SOUTH R-1
(10000)
07/25/2023
Permit
Issued x 1 826
51 ADU NORTH R-1
07/21/2023
Permit
Issued x x 1 308
52 ADU SOUTH R-1
(8000)(S)
07/18/2023
Permit
Issued x 2 275
53 ADU NORTH R-
1(10000)
07/13/2023
In Plan
Check x 1 789
54 ADU SOUTH R-1 (S)
07/12/2023
Permit
Issued x x 1 467
55 ADU SOUTH R-1
07/11/2023
Pending
Resubmittal x x 1 600
56 ADU SOUTH R-1
07/11/2023
Permit
Issued x 1 748
57 JADU SOUTH R-1
(8000)
07/06/2023
Pending
Resubmittal x 1 496
58 ADU NORTH R-2
07/05/2023
Permit
Issued x 1 677
59 ADU NORTH R-1 (S)
06/29/2023
Permit
Issued x 2 609
60 JADU NORTH R-1
06/27/2023
Permit
Issued x 1 498
61 ADU SOUTH R-1
06/20/2023
Permit
Issued x 2 750
62 ADU SOUTH R-1
(10000)
06/20/2023
Permit
Issued x 1 794
63 JADU SOUTH RM-15
06/19/2023
Pending
Resubmittal x 1 500
64 ADU NORTH R-1
06/12/2023
In Plan
Check x x 1 640
65 ADU NORTH RM-15
06/09/2023
Pending
Resubmittal x x 3 998
66 JADU NORTH R-1
06/08/2023
Permit
Issued x x 1 367
67 ADU NORTH R-1
06/07/2023 Incomplete x 1 999
68 ADU NORTH RMD
(NP)
06/06/2023
Permit
Issued x 2 808
69 ADU NORTH R-1
06/05/2023
Pending
Resubmittal x 1 726
70 ADU NORTH R-1
06/05/2023
Permit
Issued x 0 750
71 ADU SOUTH R-1
06/02/2023
Permit
Issued x 1 615
72 ADU SOUTH RE
06/01/2023
Permit
Issued x 2 1,000
73 ADU SOUTH R1
05/25/2023
Permit
Issued x 1 795
74 JADU NORTH R-1
05/24/2023
Pending
Resubmittal x 1 499
75 ADU NORTH R-1
05/18/2023
In Plan
Check x 2 799
76 ADU SOUTH OS
05/17/2023
Pending
Resubmittal x x 1 584
77 ADU SOUTH R-1
05/16/2023
Permit
Issued x 1 503
78 ADU SOUTH R-1
05/15/2023
Permit
Issued x 1 373
79 JADU SOUTH R-1
(8000)
05/12/2023
Permit
Issued x x 1 492
80 JADU NORTH R-1
05/02/2023
Permit
Issued x x 1 230
81 ADU SOUTH R-1
05/02/2023
Permit
Issued x x 0 339
82 ADU NORTH R-1
(10000)
04/28/2023
Permit
Issued x 1 578
83 ADU NORTH R-1
04/27/2023
Permit
Issued x x 1 564
84 ADU NORTH R-1
04/27/2023
Permit
Issued x 2 800
85 JADU SOUTH R-1
04/25/2023
Permit
Issued x x x 1 497
86 ADU SOUTH R-1
04/20/2023
Permit
Issued 0 324
87 JADU SOUTH R-1
(8000)
04/20/2023
Pending
Resubmittal x 1 500
88 ADU NORTH R-1
(10000)
04/17/2023
In Plan
Check x 1 797
89 JADU NORTH R-1
04/11/2023
Pending
Resubmittal x 0 236
90 ADU NORTH R-1
04/10/2023
Permit
Issued x x 0 400
91 ADU SOUTH R-1
04/07/2023
Permit
Issued x 1 498
92 ADU NORTH R-1
04/03/2023
Pending
Resubmittal x x 1 252
93 ADU SOUTH R-1
(10000)
03/29/2023
Permit
Issued x 1 500
94 ADU SOUTH R-1
(8000)
03/29/2023 Incomplete x 1 800
95 JADU SOUTH R-1
(10000)
03/28/2023
Pending
Resubmittal x 1 500
96 ADU SOUTH R-1
(10000)
03/28/2023
Pending
Resubmittal x 1 921
97 ADU SOUTH R-1
03/23/2023
Permit
Issued x 1 797
98 JADU NORTH R-1
03/17/2023
Pending
Resubmittal x x 0 401
99 JADU SOUTH R-1
(8000)
03/16/2023
Pending
Resubmittal x 1 534
100 JADU SOUTH R-1
03/15/2023
Permit
Issued x 1 499
101 ADU NORTH RM-30
03/10/2023
Pending
Resubmittal x 0 315
102 JADU SOUTH R-1
03/10/2023 Finaled x x 1 325
103 ADU SOUTH R-1
03/09/2023
Permit
Issued x x 1 391
104 ADU SOUTH R-1
(8000)
03/09/2023
Permit
Issued x 2 750
105 ADU SOUTH R-1
03/07/2023
Permit
Issued x 2 748
106 ADU NORTH RM-30
03/06/2023
Pending
Resubmittal x 1 409
107 ADU SOUTH R-1
02/16/2023
Permit
Issued x x 1 264
108 ADU SOUTH R-1
02/15/2023
Permit
Issued x x 1 440
109 JADU SOUTH R-1
02/13/2023
Permit
Issued x 1 479
110 ADU NORTH R-1
(10000)
02/09/2023
Permit
Issued x 1 810
111 ADU SOUTH R-1
02/06/2023
Permit
Issued x 1 480
112 ADU SOUTH R-1
02/02/2023
Pending
Resubmittal x 1 307
113 JADU SOUTH R-1
02/02/2023
Pending
Resubmittal x x 1 358
114 ADU SOUTH R-1
(10000)
01/30/2023
Permit
Issued x 1 810
115 JADU NORTH R-1
01/25/2023
Permit
Issued x x 1 281
116 ADU NORTH R-1
(10000)
01/23/2023
Permit
Issued x x 1 734
117 JADU NORTH RMD
(NP)
01/11/2023 Finaled x x 0 284
118 ADU SOUTH R1-
(8000)(S)
01/11/2023
Permit
Issued x 1 471
119 ADU NORTH RMD
(NP)
01/11/2023 Finaled x x 2 836
120 ADU NORTH R-1
01/10/2023
Permit
Issued x 1 538
121 ADU SOUTH R-1
01/10/2023
Permit
Issued x 2 800
122 ADU SOUTH R-1
(8000)(S)
01/03/2023 Finaled x x 1 360