Accessory Structures in Garden Grove, CA (2026)
5 verified accessory structures rules for Garden Grove, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
Garden Grove regulates ADUs and JADUs under Garden Grove Municipal Code Chapter 9.54 (Ord. 2966). Only one ADU and one JADU are allowed per single-family lot. Attached ADUs are capped at 1,200 sq ft or 50% of the primary dwelling (whichever is less), with an 800 sq ft floor where the primary unit is under 1,600 sq ft, and JADUs at 500 sq ft.
Garden Grove ADU Permit Requirements
Few RestrictionsShed Rules
Garden Grove regulates accessory structures through its single-family residential development standards. Detached structures must observe required setbacks, with a minimum 5-foot setback when adjacent to R-1 zone property. Building permits may be required depending on size.
Garden Grove Shed & Accessory Structure Rules
Some RestrictionsGarage Conversions
Garden Grove allows conversion of an existing garage to an ADU or JADU under GGMC Chapter 9.54, consistent with California Government Code §65852.2. No replacement parking is required when an existing garage is converted to an ADU, and existing setbacks are preserved for the conversion footprint.
Garden Grove Garage Conversion to ADU Rules
Few RestrictionsCarport Rules
Garden Grove regulates carports as accessory structures under Title 9 Zoning. Detached carports must observe a 5-foot side and rear setback, 10-foot street-side setback, and a 20-foot front setback. Any garage or carport door opening directly to a street or alley must sit at least 20 feet back so a parked vehicle does not overhang the right-of-way. A building permit is required.
Carport Rules in Garden Grove
Some RestrictionsTiny Homes
Garden Grove permits tiny-home-style dwellings only as Accessory Dwelling Units under Garden Grove Municipal Code Chapter 9.54, which implements California Government Code 65852.2. Detached ADUs may be up to 1,200 sq ft for two-or-more bedrooms (850 sq ft for studio/one-bedroom), with a 16-foot height cap and 4-foot side and rear setbacks. Tiny homes on wheels and recreational vehicles are not recognized as permanent dwellings.
Tiny Homes in Garden Grove
Some RestrictionsLooking for Orange County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Garden Grove city rules.
Accessory Structures in Orange County →