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
Poulsbo
WA
ADUs Allowed
Population
12,400
County
Kitsap
View Regulations
Prescott
WA
ADUs Allowed
Population
375
County
Walla Walla
View Regulations
Prosser
WA
ADUs Allowed
Population
6,445
County
Benton
View Regulations
Pullman
WA
ADUs Allowed
Population
33,060
County
Whitman
View Regulations
Puyallup
WA
ADUs Allowed
Population
43,420
County
Pierce
View Regulations
Quincy
WA
ADUs Allowed
Population
8,065
County
Grant
View Regulations
Rainier
WA
ADUs Allowed
Population
2,555
County
Thurston
View Regulations
Raymond
WA
ADUs Allowed
Population
3,110
County
Pacific
View Regulations
Reardan
WA
ADUs Allowed
Population
650
County
Lincoln
View Regulations
Redmond
WA
ADUs Allowed
Population
77,490
County
King
View Regulations
Renton
WA
ADUs Allowed
Population
107,900
County
King
View Regulations
Republic
WA
ADUs Allowed
Population
1,000
County
Ferry
View Regulations
Richland
WA
ADUs Allowed
Population
63,320
County
Benton
View Regulations
Ridgefield
WA
ADUs Allowed
Population
15,180
County
Clark
View Regulations
Ritzville
WA
ADUs Allowed
Population
1,785
County
Adams
View Regulations
Riverside
WA
ADUs Allowed
Population
325
County
Okanogan
View Regulations
Rock Island
WA
ADUs Allowed
Population
1,570
County
Douglas
View Regulations
Rockford
WA
ADUs Allowed
Population
570
County
Spokane
View Regulations
Rosalia
WA
ADUs Allowed
Population
585
County
Whitman
View Regulations
Roslyn
WA
ADUs Allowed
Population
960
County
Kittitas
View Regulations
Roy
WA
ADUs Allowed
Population
815
County
Pierce
View Regulations
Royal City
WA
ADUs Allowed
Population
1,910
County
Grant
View Regulations
Ruston
WA
ADUs Allowed
Population
1,065
County
Pierce
View Regulations
Sammamish
WA
ADUs Allowed
Population
68,280
County
King
View Regulations
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