Accessory Structures in San Bernardino, CA (2026)
5 verified accessory structures rules for San Bernardino, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
San Bernardino permits ADUs on single-family and multi-family lots under CA Gov Code 65852.2. Detached ADUs up to 1,200 sq ft and JADUs up to 500 sq ft are ministerially approved.
San Bernardino ADU Rules
Few RestrictionsShed Rules
Sheds up to 120 sq ft in San Bernardino do not require a building permit under the California Residential Code, but must meet zoning setbacks, height limits, and fire clearance rules.
San Bernardino Shed Rules
Few RestrictionsGarage Conversions
Garage conversions in San Bernardino are usually done as ADUs under CA Gov Code 65852.2, which waives replacement parking. Non-ADU conversions must meet habitable-space code and replace parking.
San Bernardino Garage Conversions
Some RestrictionsCarport Rules
Carports in San Bernardino need a building permit and must meet setback and height limits under the Development Code. Prefab metal carports require engineered plans for wind and seismic loads.
San Bernardino Carport Rules
Some RestrictionsTiny Homes
Tiny homes on permanent foundations in San Bernardino are regulated as ADUs under CA Gov Code 65852.2. Tiny homes on wheels are treated as RVs and cannot be permanent dwellings outside approved parks.
San Bernardino Tiny Home Rules
Some RestrictionsLooking for San Bernardino County county-wide rules?
County ordinances apply to unincorporated areas and may supplement San Bernardino city rules.
Accessory Structures in San Bernardino County →