Tiny Homes: Berkeley vs Fremont
How do tiny homes rules compare between Berkeley, CA and Fremont, CA?
Berkeley and Fremont have similar restriction levels.
Berkeley, CA
Alameda County
Tiny homes on foundations qualify as ADUs under Berkeley and state law. Tiny homes on wheels (THOWs) are not permitted as permanent dwellings; RV-parked living is prohibited.
View full Berkeley rules →Fremont, CA
Alameda County
Fremont allows tiny homes as ADUs if built to California Residential Code on a foundation. Tiny homes on wheels are regulated as RVs and generally cannot be primary dwellings.
View full Fremont rules →Key Facts Comparison
| Fact | Berkeley | Fremont |
|---|---|---|
| Tiny home on foundation | Allowed as ADU | - |
| THOW on wheels | Not permitted as dwelling | - |
| Min ceiling | 7 ft (loft exceptions) | - |
| Approval | 60 days ministerial | - |
| RV living | Prohibited | - |
| Fixed Tiny Home | - | ADU if CRC-compliant |
| Minimum Size | - | 150 sq ft |
| Foundation | - | Required for ADU |
| THOW (RV) | - | Cannot be primary dwelling |
| Manufactured Home | - | Allowed with HUD certification |
Highlighted rows indicate differences between cities.
Berkeley FAQ
Can I park my tiny home on wheels in my Berkeley backyard?
Not for full-time dwelling. THOWs are RVs under California law and cannot be used as permanent residences on residential property. Short-term storage may be allowed with setback compliance.
Do tiny homes on foundation need full foundations?
Yes. To qualify as an ADU, the tiny home must sit on a permanent engineered foundation (slab or pier) meeting CRC. Skirted trailer setups do not qualify.
Fremont FAQ
Can I live in a tiny home on wheels in my Fremont driveway?
No. Long-term habitation of RVs and trailers on residential property is prohibited. Short stays by guests (under 7 days) may be allowed. Contact Fremont Code Enforcement for specific rules during family emergencies.
What is the smallest ADU Fremont will permit?
The California Residential Code requires a minimum 150 square feet for a studio dwelling with efficiency kitchen and full bath. Some jurisdictions allow smaller MTH, but Fremont requires CRC compliance which enforces the 150 sq ft floor.
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