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
McCleary
WA
ADUs Allowed
Population
2,120
County
Grays Harbor
View Regulations
Medical Lake
WA
ADUs Allowed
Population
4,915
County
Spokane
View Regulations
Medina
WA
ADUs Allowed
Population
2,925
County
King
View Regulations
Mercer Island
WA
ADUs Allowed
Population
25,800
County
King
View Regulations
Mesa
WA
ADUs Allowed
Population
390
County
Franklin
View Regulations
Metaline
WA
ADUs Allowed
Population
160
County
Pend Oreille
View Regulations
Metaline Falls
WA
ADUs Allowed
Population
275
County
Pend Oreille
View Regulations
Mill Creek
WA
ADUs Allowed
Population
21,630
County
Snohomish
View Regulations
Millwood
WA
ADUs Allowed
Population
1,925
County
Spokane
View Regulations
Milton
WA
ADUs Allowed
Population
8,715
County
King/Pierce
View Regulations
Monroe
WA
ADUs Allowed
Population
20,590
County
Snohomish
View Regulations
Montesano
WA
ADUs Allowed
Population
4,090
County
Grays Harbor
View Regulations
Morton
WA
ADUs Allowed
Population
1,080
County
Lewis
View Regulations
Moses Lake
WA
ADUs Allowed
Population
26,210
County
Grant
View Regulations
Mossyrock
WA
ADUs Allowed
Population
785
County
Lewis
View Regulations
Mount Vernon
WA
ADUs Allowed
Population
35,590
County
Skagit
View Regulations
Mountlake Terrace
WA
ADUs Allowed
Population
23,810
County
Snohomish
View Regulations
Moxee
WA
ADUs Allowed
Population
4,785
County
Yakima
View Regulations
Mukilteo
WA
ADUs Allowed
Population
21,590
County
Snohomish
View Regulations
Naches
WA
ADUs Allowed
Population
1,120
County
Yakima
View Regulations
Napavine
WA
ADUs Allowed
Population
1,955
County
Lewis
View Regulations
Nespelem
WA
ADUs Allowed
Population
185
County
Okanogan
View Regulations
Newcastle
WA
ADUs Allowed
Population
13,610
County
King
View Regulations
Newport
WA
ADUs Allowed
Population
2,135
County
Pend Oreille
View Regulations
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