Accessory Structures in San Ramon, CA (2026)
3 verified accessory structures rules for San Ramon, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
ADUs allowed per CA Gov Code §65852.2 and San Ramon Zoning Ordinance §D4-39. One detached ADU and one JADU per single-family lot. Setbacks: 4 ft side/rear, 20 ft front for detached units. JADU up to 500 sq ft within existing home. Permit review: 6–12 weeks. Pre-approved plans available through Permit Ready ADU program.
San Ramon ADU (Accessory Dwelling Unit) Rules
Few RestrictionsShed Rules
Accessory structures limited to 12 ft height in most residential zones (HR, RE-B, RS, RM, RMH, RH, RVH) and 16 ft in RC, RR, and RE-A zones. Structures in front setback limited to 3 ft plus 18 inches for decorative features/lighting.
San Ramon Shed & Outbuilding Rules
Some RestrictionsGarage Conversions
Garage conversions to ADUs permitted under CA statewide ADU law. No replacement parking required. Must meet building code for habitable space. Reviewed through building permit process.
San Ramon Garage Conversion Rules
Few RestrictionsLooking for Contra Costa County county-wide rules?
County ordinances apply to unincorporated areas and may supplement San Ramon city rules.
Accessory Structures in Contra Costa County →