ADU Rules: Concord vs Oakley
How do adu rules rules compare between Concord, CA and Oakley, CA?
Concord has fewer restrictions than Oakley.
Concord, CA
Contra Costa County
Concord must allow at least one ADU plus one Junior ADU per single-family residential lot under California Government Code §65852.2 (AB 68/881). ADUs up to 800 sq ft cannot be denied. Permits process within 60 days, 4-foot setbacks, no parking near transit, no impact fees under 750 sq ft.
View full Concord rules →Oakley, CA
Contra Costa County
Oakley complies with California Gov Code §65852.2 (statewide ADU law). Single-family lots may have one ADU plus one JADU. Maximum ADU size: 1,200 sq ft; no minimum lot size restriction. Setbacks: 4 ft from side/rear property lines (new detached ADU). Minimum height: 16 ft. ADUs under 750 sq ft are exempt from impact fees. ADU permit applications processed in 60 days maximum.
View full Oakley rules →Key Facts Comparison
| Fact | Concord | Oakley |
|---|---|---|
| - | - | |
| Max ADU Size | - | 1,200 sq ft (detached) |
| Setbacks | - | 4 ft rear and side (new detached ADU) |
| Minimum Height | - | 16 ft for detached ADU |
| Impact Fees | - | Exempt for ADUs under 750 sq ft |
Highlighted rows indicate differences between cities.
Concord FAQ
Oakley FAQ
Can I build an ADU on my property in Oakley?
Oakley complies with California Gov Code §65852.2 (statewide ADU law). Single-family lots may have one ADU plus one JADU. Maximum ADU size: 1,200 sq ft; no minimum lot size restriction. Setbacks: 4 ft from side/rear property lines (new detached ADU). Minimum height: 16 ft. ADUs under 750 sq ft...
What are the size limits for an accessory dwelling unit in Oakley?
Max ADU Size: 1,200 sq ft (detached). Setbacks: 4 ft rear and side (new detached ADU). Minimum Height: 16 ft for detached ADU. Impact Fees: Exempt for ADUs under 750 sq ft.
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