Tiny Homes: Altadena vs Lancaster
How do tiny homes rules compare between Altadena, CA and Lancaster, CA?
Altadena and Lancaster have similar restriction levels.
Altadena, 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 Altadena rules →Lancaster, CA
Los Angeles County
Lancaster regulates tiny homes differently based on whether they are on a permanent foundation or on wheels. Zoning and minimum square footage requirements apply.
View full Lancaster rules →Key Facts Comparison
| Fact | Altadena | Lancaster |
|---|---|---|
| On Foundation | Treated as ADU, permitted | - |
| On Wheels | Not allowed as permanent dwelling | RV classification typically |
| Max ADU Size | 1,200 sq ft detached | - |
| State Law | CA Gov Code 65852.2 | - |
| Foundation | - | Treated as dwelling |
| Min Size | - | 400 to 800 sq ft varies |
| ADU Path | - | May allow as secondary |
Highlighted rows indicate differences between cities.
Altadena 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.
Lancaster FAQ
Can I put a tiny home in my backyard?
Possibly under Lancaster ADU rules if on a permanent foundation. Tiny homes on wheels face stricter zoning limitations.
What is the minimum house size?
Lancaster typically requires 400 to 800+ square feet for a primary dwelling. ADU rules may allow smaller secondary units.
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