Tiny Homes: Bostonia vs Oceanside
How do tiny homes rules compare between Bostonia, CA and Oceanside, CA?
Bostonia and Oceanside have similar restriction levels.
Bostonia, CA
San Diego County
Tiny homes in unincorporated San Diego County are regulated differently based on type. Tiny homes on foundations are treated as ADUs (up to 1,200 sq ft detached). Tiny homes on wheels are treated as RVs and cannot serve as permanent dwellings. Building permits required for foundation-based tiny homes.
View full Bostonia rules →Oceanside, CA
San Diego County
Tiny homes in Oceanside are regulated as ADUs if permanently affixed, or as recreational vehicles if on wheels. ADUs up to 1,200 sq ft are permitted under California state law. Tiny homes on wheels cannot be used as permanent residences.
View full Oceanside rules →Key Facts Comparison
| Fact | Bostonia | Oceanside |
|---|---|---|
| On Foundation | Treated as ADU — permits required | - |
| On Wheels | Treated as RV — not permanent dwelling | Classified as RV — no permanent habitation |
| Max ADU Size | 1,200 sq ft detached | - |
| Building Code | Full compliance required for foundation | - |
| RV Residence | Not permitted as primary dwelling | - |
| As ADU | - | Up to 1,200 sq ft permitted |
| Max Height | - | 16 ft (18 ft near rail station) |
| Factory-Built | - | Must have HCD certification |
| Permit | - | Building permit required |
Highlighted rows indicate differences between cities.
Bostonia FAQ
Can I build a tiny home in unincorporated San Diego County?
Yes, if it is on a permanent foundation. It will be regulated as an ADU with a maximum of 1,200 sq ft and must meet all building code requirements. A building permit from County PDS is required.
Can I live in a tiny home on wheels?
No. Tiny homes on wheels are classified as recreational vehicles and cannot be used as permanent residences under county zoning regulations.
What are the minimum size requirements?
California building code requires habitable rooms to be at least 70 sq ft with a 7-foot minimum ceiling height. There is no county-specific minimum square footage for an ADU beyond building code requirements.
Oceanside FAQ
Can I put a tiny home on my property in Oceanside?
A permanently-affixed tiny home on a foundation may be permitted as an ADU up to 1,200 sq ft. Tiny homes on wheels cannot be used as permanent residences.
What is the maximum height for a tiny home ADU?
Detached ADUs are limited to 16 feet, or 18 feet if the property is within half a mile walking distance of a rail station like the Oceanside Transit Center.
Can I live in a tiny house on wheels?
No. Tiny homes on wheels are classified as recreational vehicles and cannot be occupied as permanent dwellings on residential property.
Compare other topics
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