Buena Park, CA Accessory Structures: Tiny Homes (2026)

Buena Park's code does not define or separately regulate 'tiny homes.' In practice the city handles them through existing categories. A permanent small detached dwelling can be built as an accessory dwelling unit under BPMC 19.348.010, which states that an accessory dwelling unit also includes a manufactured home as defined in Section 18007 of the California Health and Safety Code - so a manufactured 'tiny' unit on a permanent foundation is permitted as an ADU. As an ADU it must meet the ordinance's size minimum of 150 square feet and maximums (850 sq ft for up to one bedroom, 1,000 sq ft for more), the 16-foot detached-ADU height limit, the 4-foot side/rear setbacks, and design standards (manufactured homes must have skirting and matching exterior siding to appear set on grade). A tiny house on wheels is generally a recreational vehicle or trailer under state law and cannot be used as a permanent residence on a residential lot; the city does not authorize living in RVs or trailers as dwellings. There is no city ordinance permitting a movable tiny house as a primary or accessory residence outside the ADU framework. Anyone considering a tiny home should confirm the pathway with the Planning Division (714-562-3620). These are city standards; the city implements, but is distinct from, statewide ADU law.