West Sacramento, CA Accessory Structures: Tiny Homes (2026)
Tiny home rules in West Sacramento, CA, covering tiny houses on wheels (THOWs), park model RVs, and tiny home on foundation builds, determine where they are legal and how they get permitted.
Key Facts
- Max habitable area
- 399 sq ft
- Before siting
- Administrative approval required
- Allowed as
- Primary dwelling or ADU
- Certification required
- ANSI 119.5 / NFPA 1192
Summary
West Sacramento allows Tiny Homes on Wheels as a primary residence or an accessory dwelling unit in any zone, capped at 399 square feet, with mandatory administrative approval and ANSI/NFPA certification.
Tiny Homes on Wheels (THoW) may be deployed as a primary dwelling unit or as an accessory dwelling unit (ADU). THoWs used as primary dwelling units are subject to the site development standards in the underlying zoning district. THoWs used as ADUs are subject to those standards contained within Section 17.30.040 (Accessory Dwelling Units). All THoWs regardless of primary or accessory status are also subject to:
1. Public Utilities. THoWs shall be connected to the City water and sewer systems or on an approved well and/or septic system where City services are not available.
2. Administrative Approval. A proposed THoW must receive administrative approval from the Community Development Department prior to being transported to the project site. Fees for said approval shall be per the adopted fee schedule contained within the Book of Fees and applied proportionally.
3. Maximum Floor Area. The maximum square footage of habitable floor space for a THoW shall be 399 square feet including loft areas (if any).
4. Address. THoWs shall obtain a separate address with issuance of an electrical permit.
5. Qualifying Features. THoWs shall include a bathroom, kitchen, and a sleeping area.
6. Certification. THoWs shall comply with standards set forth in California Health and Safety Code Section 18027.3 (i.e., ANSI 119.5 and NFPA 1192).
Full Breakdown
Section 17.08.040.E of the City of West Sacramento, Yolo County code permits Tiny Homes on Wheels (THoWs) as either a primary dwelling unit, following the underlying zone's development standards, or as an accessory dwelling unit under § 17.30.040, where state ADU law (Gov. Code §§ 66310-66342) controls where local rules conflict. Every THoW, regardless of status, is capped at 399 square feet of habitable space, must connect to City water and sewer or an approved well/septic system, needs administrative approval from Community Development before it is towed onto the site, and must carry ANSI 119.5/NFPA 1192 certification per California Health and Safety Code § 18027.3. The undercarriage must be screened from street view.
Violations & Fines
Siting or occupying a THoW without Community Development's administrative approval, or exceeding the 399-square-foot habitable-area cap, is a code violation subject to correction.
Frequently Asked Questions
Can I put a tiny home on wheels in my backyard in West Sacramento?
Does a THoW need a building permit?
Sources & Official References
Other rules in West Sacramento
California rules heatmap·Compare West Sacramento to another location·View the California accessory structures overview
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