Tiny Homes: Martinez vs Oakley
How do tiny homes rules compare between Martinez, CA and Oakley, CA?
Martinez and Oakley have similar restriction levels.
Martinez, CA
Contra Costa County
California HCD guidance and Health and Safety Code 18007 classify many tiny homes on wheels as manufactured housing or ADUs, granting statewide siting protections.
View full Martinez rules →Oakley, CA
Contra Costa County
Permanent foundation tiny homes in Oakley are regulated as ADUs under state law and must meet California Residential Code minimums (typically 150 sq ft minimum for efficiency units plus kitchen and bathroom). Tiny homes on wheels (THOWs) registered as recreational vehicles cannot be used as permanent dwellings in most zones. Movable tiny houses built to ANSI A119.5 standards may be permitted as ADUs where allowed by local ordinance. HCD-certified factory-built homes qualify for expedited ADU approval.
View full Oakley rules →Key Facts Comparison
| Fact | Martinez | Oakley |
|---|---|---|
| Statute | Health & Safety Code 18007 | - |
| ADU pathway | Gov Code 65852.2 | - |
| Standards | HUD or ANSI 119.5 | - |
| Regulator | HCD | - |
| Fact | - | Permanent tiny houses = ADUs under state law |
Highlighted rows indicate differences between cities.
Martinez FAQ
Can I park a tiny home on wheels in my backyard full time?
Generally no, unless it qualifies as an ADU on a foundation or your city has a specific movable-tiny-house ordinance. RVs are limited to RV parks.
Are foundation-built tiny homes protected by ADU law?
Yes. A tiny home meeting ADU size and code requirements receives the full ministerial approval protections of Government Code 65852.2 statewide.
Oakley FAQ
Can I live full-time in a tiny home on wheels in my backyard?
Generally no, unless Oakley has adopted an ordinance allowing movable tiny houses as ADUs. RV-registered tiny homes are not permanent dwellings under most California zoning. Confirm current policy with the Oakley Planning Division before purchase.
Does a tiny house qualify for the streamlined ADU review?
Yes, if it is built to the California Residential Code on a permanent foundation or is an HCD-certified factory-built home. State ADU law applies regardless of square footage, and impact fees are waived under 750 sq ft.
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