Accessory Structures in Westminster, CA (2026)
5 verified accessory structures rules for Westminster, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
Westminster regulates accessory dwelling units under Permanent Ordinance No. 2572 (adopted March 24, 2021) and Zoning Code Section 17.400.135. ADUs are approved ministerially (no discretionary hearing) on a combined Planning Zoning Clearance and Building plan check, consistent with California state ADU law.
Westminster ADU Rules
Some RestrictionsShed Rules
Westminster regulates detached accessory structures, including sheds, under Zoning Code Section 17.400.130. Small sheds 120 square feet or less and 7 feet or less in height are exempt from zoning development restrictions (though Building and Fire codes still apply) if placed behind the dwelling's front building line and inside required setbacks.
Westminster Shed Rules
Some RestrictionsGarage Conversions
Westminster allows converting an existing garage or accessory structure into an accessory dwelling unit under Zoning Code Section 17.400.135 and Ordinance No. 2572. The city's ADU page lists garage conversion as a recognized way to create an ADU. Converting a garage to non-ADU living space without permits is prohibited.
Westminster Garage Conversions
Some RestrictionsCarport Rules
In Westminster, carports may be permitted in the R1 single-family zone only in addition to the minimum number of enclosed garage spaces required by the Zoning Code. Required residential parking must be located in garages, carports, or approved parking areas under Chapter 17.320 (Off-Street Parking and Loading).
Westminster Carport Rules
Some RestrictionsTiny Homes
Westminster's Municipal Code has no separate "tiny home" category. Living in accessory structures is prohibited, and recreational vehicles or trailers may not be used as living quarters except in an approved mobile home park. A movable or fixed tiny house used as a residence must instead qualify as an accessory dwelling unit under Section 17.400.135.
Westminster Tiny Homes
Heavy RestrictionsLooking for Orange County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Westminster city rules.
Accessory Structures in Orange County →