Placer County, CA Accessory Structures: Tiny Homes (2026)

400, to its zoning ordinance, treating a tiny house on wheels as its own regulated structure rather than folding it into recreational-vehicle rules by default. 200 (Accessory and junior accessory dwelling units). 400(C)(1) requires zoning clearance to confirm compliance with every standard in the section, subject to applicable fees. The unit itself must be licensed and registered with the California DMV or the California Department of Housing and Community Development, cannot exceed the size California law allows for movement on public highways, cannot exceed one story, and cannot be able to move under its own power, which excludes motorhomes and self-propelled RVs.

Siting standards require a minimum four-foot fire separation from an adjacent lot line and at least 10 feet from any other structure on the same lot. 400(C)(5) and (9) require the undercarriage, wheels, axles, tongue, and hitch to be concealed or skirted, and the unit must be tied down or otherwise stabilized. Appearance rules under (C)(6) require conventional residential design, typical siding and roofing materials, pitched roofs, eaves, and residential windows, rather than an RV look, and (C)(7) bars slide-outs or other mechanically articulating room extensions. 32, water and sewer connection approved by environmental health, and NFPA/ANSI third-party safety certification are all separately required under (C)(9) through (C)(12).