Accessory Structures in Richmond, CA (2026)
3 verified accessory structures rules for Richmond, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
Richmond allows ADUs in all residential zones under RMC §15.04.610.020 and CA Gov Code §65852.2. Detached ADUs up to 1,200 sq ft, attached up to 50% of primary or 1,200 sq ft. JADUs up to 500 sq ft. Height limit 16 ft for detached. Ministerial approval (no public hearing). Pre-approved plans available free of charge.
Richmond ADU (Accessory Dwelling Unit) Rules
Few RestrictionsShed Rules
Sheds and similar one-story detached accessory structures under 120 square feet are exempt from building permit requirements under California Building Code Section 105.2. Larger sheds require a Richmond building permit and must comply with zoning setbacks, height limits, and lot-coverage rules.
Accessory Structures: Sheds
Few RestrictionsGarage Conversions
Garages in Richmond must comply with California Building Code structural and fire-separation standards, zoning setbacks, and Richmond parking requirements. Garage conversions to ADUs or habitable space are permitted under state law and do not trigger replacement parking within 1/2 mile of transit. Using garages for long-term storage only can violate municipal parking rules.
Accessory Structures: Garage Rules
Some RestrictionsLooking for Contra Costa County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Richmond city rules.
Accessory Structures in Contra Costa County →