Tiny Homes: Altadena vs Pasadena
How do tiny homes rules compare between Altadena, CA and Pasadena, CA?
Altadena and Pasadena 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 →Pasadena, CA
Los Angeles County
Tiny homes on wheels are not permitted as permanent dwellings in Pasadena. Fixed tiny homes on a foundation may qualify as ADUs under CA Gov Code 65852.2. Detached ADUs limited to 17 ft ridgeline height and one story.
View full Pasadena rules →Key Facts Comparison
| Fact | Altadena | Pasadena |
|---|---|---|
| On Foundation | Treated as ADU, permitted | May qualify as ADU |
| On Wheels | Not allowed as permanent dwelling | Not allowed as dwelling |
| Max ADU Size | 1,200 sq ft detached | - |
| State Law | CA Gov Code 65852.2 | CA Gov Code 65852.2 |
| ADU Height | - | 17 ft ridgeline, one story |
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.
Pasadena FAQ
Can I put a tiny home in my backyard?
Possibly under Pasadena ADU rules if on a permanent foundation. Tiny homes on wheels face stricter zoning limitations.
What is the minimum house size?
Pasadena typically requires 400 to 800+ square feet for a primary dwelling. ADU rules may allow smaller secondary units.
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