Tiny Homes: Bostonia vs Elfin Forest
How do tiny homes rules compare between Bostonia, CA and Elfin Forest, CA?
Bostonia and Elfin Forest 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 →Elfin Forest, 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 Elfin Forest rules →Key Facts Comparison
| Fact | Bostonia | Elfin Forest |
|---|---|---|
| On Foundation | Treated as ADU — permits required | Treated as ADU — permits required |
| On Wheels | Treated as RV — not permanent dwelling | Treated as RV — not permanent dwelling |
| Max ADU Size | 1,200 sq ft detached | 1,200 sq ft detached |
| Building Code | Full compliance required for foundation | Full compliance required for foundation |
| RV Residence | Not permitted as primary dwelling | Not permitted as primary dwelling |
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.
Elfin Forest 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.
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