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
Sultan
WA
ADUs Allowed
Population
6,730
County
Snohomish
View Regulations
Sumas
WA
ADUs Allowed
Population
1,810
County
Whatcom
View Regulations
Sumner
WA
ADUs Allowed
Population
10,800
County
Pierce
View Regulations
Sunnyside
WA
ADUs Allowed
Population
16,530
County
Yakima
View Regulations
Tacoma
WA
ADUs Allowed
Population
222,400
County
Pierce
View Regulations
Tekoa
WA
ADUs Allowed
Population
805
County
Whitman
View Regulations
Tenino
WA
ADUs Allowed
Population
2,045
County
Thurston
View Regulations
Tieton
WA
ADUs Allowed
Population
1,545
County
Yakima
View Regulations
Toledo
WA
ADUs Allowed
Population
695
County
Lewis
View Regulations
Tonasket
WA
ADUs Allowed
Population
1,085
County
Okanogan
View Regulations
Toppenish
WA
ADUs Allowed
Population
8,900
County
Yakima
View Regulations
Tukwila
WA
ADUs Allowed
Population
22,780
County
King
View Regulations
Tumwater
WA
ADUs Allowed
Population
27,100
County
Thurston
View Regulations
Twisp
WA
ADUs Allowed
Population
1,075
County
Okanogan
View Regulations
Union Gap
WA
ADUs Allowed
Population
6,660
County
Yakima
View Regulations
Uniontown
WA
ADUs Allowed
Population
400
County
Whitman
View Regulations
University Place
WA
ADUs Allowed
Population
35,580
County
Pierce
View Regulations
Vader
WA
ADUs Allowed
Population
650
County
Lewis
View Regulations
Vancouver
WA
ADUs Allowed
Population
199,600
County
Clark
View Regulations
Waitsburg
WA
ADUs Allowed
Population
1,185
County
Walla Walla
View Regulations
Walla Walla
WA
ADUs Allowed
Population
34,310
County
Walla Walla
View Regulations
Wapato
WA
ADUs Allowed
Population
4,620
County
Yakima
View Regulations
Warden
WA
ADUs Allowed
Population
2,625
County
Grant
View Regulations
Washougal
WA
ADUs Allowed
Population
17,490
County
Clark
View Regulations
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