Tiny Homes: Bostonia vs Escondido
How do tiny homes rules compare between Bostonia, CA and Escondido, CA?
Bostonia and Escondido 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 →Escondido, CA
San Diego County
Escondido regulates ADUs under Article 70 of the Zoning Code. Detached ADUs: up to 850 sq ft (1 BR) or 1,000 sq ft (2+ BR). Attached: up to 50% of primary or 1,200 sq ft. Minimum setbacks: 4 feet from rear and side.
View full Escondido rules →Key Facts Comparison
| Fact | Bostonia | Escondido |
|---|---|---|
| On Foundation | Treated as ADU — permits required | - |
| On Wheels | Treated as RV — not permanent dwelling | - |
| Max ADU Size | 1,200 sq ft detached | - |
| Building Code | Full compliance required for foundation | - |
| RV Residence | Not permitted as primary dwelling | - |
| Detached (1 BR) | - | 850 sq ft max |
| Detached (2+ BR) | - | 1,000 sq ft max |
| Attached | - | 50% of primary or 1,200 sq ft |
| Side/Rear Setback | - | 4 ft min |
| Code | - | EMC Art. 70 |
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.
Escondido FAQ
Can I build a tiny home?
Yes, as an ADU. Up to 850 sq ft (1 BR) or 1,000 sq ft (2+ BR) in all residential zones.
Parking for ADU?
No. Per SB 1211 (Jan 2025), no replacement parking required.
Setbacks?
4 ft from rear and side. Above garage: 5 ft.
Compare other topics
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