Richmond, CA Accessory Structures: Shed Rules (2026)

California Building Code Section 105.2, as adopted by Richmond, exempts one-story detached accessory structures used as tool and storage sheds, playhouses, and similar uses from building-permit requirements if the floor area does not exceed 120 square feet, they are not used as habitable space, and they do not contain plumbing, gas, or electrical service. This exemption applies to permit only — zoning rules still govern placement, size, and use. In Richmond's typical single-family zones (SFR-3, SFR-4, SFR-5, etc.), sheds must respect rear and side setbacks (commonly 3–5 feet depending on zone), lot-coverage maximums (usually 40–50% total building coverage), and maximum-height limits (typically 10–12 feet for accessory structures). Sheds may not be placed in front yards and cannot be used as dwelling units (for ADU or JADU standards, see adu-permits). Larger sheds over 120 sq ft require a building permit; electrical service (outlets, lighting) requires an electrical permit regardless of shed size. Prefab sheds delivered as finished units are still subject to zoning review even if building-permit-exempt. Homes within homeowners associations may have additional CC&R-based restrictions on shed size, siding, color, and placement. Structures in designated flood zones must meet additional FEMA anchoring and flood-opening requirements. Removal of protected trees to accommodate a shed requires tree-removal permits. Richmond's Planning Division can confirm specific zoning setbacks for any parcel through the online zoning map.