Tiny Homes: Santa Monica vs Topanga
How do tiny homes rules compare between Santa Monica, CA and Topanga, CA?
Santa Monica and Topanga have similar restriction levels.
Santa Monica, CA
Los Angeles County
Tiny homes on foundations in Santa Monica are regulated as ADUs under CA Gov Code §65852.2 and the local zoning code. Tiny homes on wheels are not permitted as permanent dwellings. The city must allow ADUs per state law.
View full Santa Monica rules →Topanga, CA
Los Angeles County
Tiny homes on permanent foundations are treated as ADUs under CA Gov Code 65852.2 and LA County's ADU ordinance in unincorporated areas. Tiny homes on wheels are not recognized as permanent dwellings. LA County allows ADUs up to 1,200 sq ft detached with 4 ft side/rear setbacks.
View full Topanga rules →Key Facts Comparison
| Fact | Santa Monica | Topanga |
|---|---|---|
| On Foundation | Regulated as ADU | Treated as ADU, permitted |
| On Wheels | Not permanent dwelling | Not allowed as permanent dwelling |
| State Law | CA Gov Code §65852.2 | CA Gov Code 65852.2 |
| Permit | Building permit required | - |
| Max ADU Size | - | 1,200 sq ft detached |
Highlighted rows indicate differences between cities.
Santa Monica FAQ
Can I put a tiny home in my backyard?
Possibly under Santa Monica ADU rules if on a permanent foundation. Tiny homes on wheels face stricter zoning limitations.
What is the minimum house size?
Santa Monica typically requires 400 to 800+ square feet for a primary dwelling. ADU rules may allow smaller secondary units.
Topanga FAQ
Can I put a tiny home in my backyard in unincorporated LA County?
Yes, if it's on a permanent foundation and meets ADU requirements. Detached units up to 1,200 sq ft are allowed with 4-foot setbacks. You need a building permit from LA County Building & Safety.
Can I live in a tiny home on wheels in LA County?
No. Tiny homes on wheels are classified as recreational vehicles and cannot be used as permanent dwellings. They can be parked on your property subject to RV parking rules but cannot be connected to utilities as a residence.
What permits do I need for a tiny home ADU?
You need a building permit from LA County Building & Safety. Under state law, ADU permits must be approved ministerially (no discretionary review) within 60 days if plans comply with standards. Contact (626) 458-3171.
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