California ADU Information
Find ADU Regulations for Your City
Every California city allows ADUs by state law. Search your city to learn about local regulations, building requirements, and how to get started.
1125
Cities
100%
Allow ADUs
1,200
Max Sq Ft
Woodburn
OR
ADUs Allowed
Population
26,222
View Regulations
Yachats
OR
ADUs Allowed
Population
772
View Regulations
Yamhill
OR
ADUs Allowed
Population
1,184
View Regulations
Yoncalla
OR
ADUs Allowed
Population
1,104
View Regulations
Aberdeen
WA
ADUs Allowed
Population
17,080
County
Grays Harbor
View Regulations
Airway Heights
WA
ADUs Allowed
Population
11,280
County
Spokane
View Regulations
Albion
WA
ADUs Allowed
Population
540
County
Whitman
View Regulations
Algona
WA
ADUs Allowed
Population
3,315
County
King
View Regulations
Almira
WA
ADUs Allowed
Population
320
County
Lincoln
View Regulations
Anacortes
WA
ADUs Allowed
Population
18,020
County
Skagit
View Regulations
Arlington
WA
ADUs Allowed
Population
21,740
County
Snohomish
View Regulations
Asotin
WA
ADUs Allowed
Population
1,225
County
Asotin
View Regulations
Auburn
WA
ADUs Allowed
Population
88,820
County
King/Pierce
View Regulations
Bainbridge Island
WA
ADUs Allowed
Population
25,180
County
Kitsap
View Regulations
Battle Ground
WA
ADUs Allowed
Population
21,910
County
Clark
View Regulations
Beaux Arts Village
WA
ADUs Allowed
Population
315
County
King
View Regulations
Bellevue
WA
ADUs Allowed
Population
154,600
County
King
View Regulations
Bellingham
WA
ADUs Allowed
Population
95,960
County
Whatcom
View Regulations
Benton City
WA
ADUs Allowed
Population
3,810
County
Benton
View Regulations
Bingen
WA
ADUs Allowed
Population
780
County
Klickitat
View Regulations
Black Diamond
WA
ADUs Allowed
Population
6,880
County
King
View Regulations
Blaine
WA
ADUs Allowed
Population
6,310
County
Whatcom
View Regulations
Bonney Lake
WA
ADUs Allowed
Population
23,250
County
Pierce
View Regulations
Bothell
WA
ADUs Allowed
Population
49,550
County
King/Snohomish
View Regulations
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