Accessory Structures in Chino Hills, CA (2026)
5 verified accessory structures rules for Chino Hills, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
The City of Chino Hills permits accessory dwelling units and junior ADUs ministerially under its Development Code, CHMC 16.10.140, implementing California's statewide ADU law (Gov. Code 66310 et seq.). Detached ADUs are capped at 850 sq ft (1 bedroom) or 1,000 sq ft (2+ bedrooms), JADUs at 500 sq ft, with 4-foot side/rear setbacks.
Chino Hills ADU & JADU Rules
Some RestrictionsShed Rules
Chino Hills exempts small detached sheds from a building permit: one-story tool/storage sheds and playhouses up to 120 sq ft and 10 feet tall. Per Development Code Section 16.06.070, accessory structures must stay out of setbacks, but those 10 feet or under may sit in a side or rear setback if at least 5 feet from the property line.
Chino Hills Shed Rules
Some RestrictionsGarage Conversions
Chino Hills allows an existing garage to be converted into an accessory dwelling unit or JADU under Development Code Section 16.10.140, following California ADU law. When a garage is converted to an ADU, parking lost for the primary home need not be replaced. Converting a garage into unpermitted living space without ADU permits is a code violation.
Chino Hills Garage Conversion Rules
Some RestrictionsCarport Rules
Chino Hills regulates carports as accessory structures under Development Code Chapter 16.06. Carports are not on the city's building-permit exemption list, so a building permit is generally required. Like other accessory structures, a carport must observe the Section 16.06.070 setbacks - kept out of required setbacks, with limited side/rear placement at least 5 feet from the property line.
Chino Hills Carport Rules
Some RestrictionsTiny Homes
Chino Hills has no separate 'tiny home' ordinance. A tiny house on a permanent foundation is generally permitted as an ADU under Development Code Section 16.10.140 (detached ADUs up to 850-1,000 sq ft). A movable tiny house on wheels is treated under California law as a recreational vehicle, not a dwelling, and cannot be a permanent residence.
Chino Hills Tiny Home Rules
Some RestrictionsLooking for San Bernardino County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Chino Hills city rules.
Accessory Structures in San Bernardino County →