Accessory Structures in Oakley, CA (2026)
4 verified accessory structures rules for Oakley, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
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.
Oakley ADU (Accessory Dwelling Unit) Rules
Some RestrictionsShed Rules
Accessory structures (sheds, detached storage buildings) in Oakley require building permits based on size and use. Sheds must be at least 5 feet from fences (3 feet if metal or non-combustible material). Setbacks from property lines apply per the Oakley Zoning Code. Contact the Oakley Building Division at (925) 625-7005 for permit requirements.
Oakley Shed & Outbuilding Rules
Some RestrictionsGarage Conversions
Garage conversions to living space in Oakley require building permits and must comply with California residential building codes. Conversions may qualify as ADUs or JADUs under CA Gov Code §65852.22. Replacement parking is not required within ½ mile of transit (AB 2097). Contact the Oakley Building Division at (925) 625-7005.
Oakley Garage Conversion Rules
Some RestrictionsTiny Homes
Permanent foundation tiny homes in Oakley are regulated as ADUs under state law and must meet California Residential Code minimums (typically 150 sq ft minimum for efficiency units plus kitchen and bathroom). Tiny homes on wheels (THOWs) registered as recreational vehicles cannot be used as permanent dwellings in most zones. Movable tiny houses built to ANSI A119.5 standards may be permitted as ADUs where allowed by local ordinance. HCD-certified factory-built homes qualify for expedited ADU approval.
Accessory Structures: Tiny Homes
Some RestrictionsLooking for Contra Costa County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Oakley city rules.
Accessory Structures in Contra Costa County →