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
Gresham
OR
ADUs Allowed
Population
113,525
View Regulations
Haines
OR
ADUs Allowed
Population
220
View Regulations
Halfway
OR
ADUs Allowed
Population
415
View Regulations
Halsey
OR
ADUs Allowed
Population
1,419
View Regulations
Happy Valley
OR
ADUs Allowed
Population
24,381
View Regulations
Harbor
OR
ADUs Allowed
Population
2,003
View Regulations
Harper
OR
ADUs Allowed
Population
184
View Regulations
Harrisburg
OR
ADUs Allowed
Population
3,663
View Regulations
Hayesville
OR
ADUs Allowed
Population
21,822
View Regulations
Hebo
OR
ADUs Allowed
Population
241
View Regulations
Helix
OR
ADUs Allowed
Population
358
View Regulations
Heppner
OR
ADUs Allowed
Population
1,318
View Regulations
Hermiston
OR
ADUs Allowed
Population
19,267
View Regulations
Hillsboro
OR
ADUs Allowed
Population
106,612
View Regulations
Hines
OR
ADUs Allowed
Population
1,608
View Regulations
Holley
OR
ADUs Allowed
Population
294
View Regulations
Hood River
OR
ADUs Allowed
Population
8,292
View Regulations
Hubbard
OR
ADUs Allowed
Population
3,427
View Regulations
Huntington
OR
ADUs Allowed
Population
682
View Regulations
Idanha
OR
ADUs Allowed
Population
141
View Regulations
Idaville
OR
ADUs Allowed
Population
167
View Regulations
Imbler
OR
ADUs Allowed
Population
336
View Regulations
Independence
OR
ADUs Allowed
Population
9,981
View Regulations
Ione
OR
ADUs Allowed
Population
397
View Regulations
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