Tiny Homes: Vacaville vs Vallejo
How do tiny homes rules compare between Vacaville, CA and Vallejo, CA?
Vacaville and Vallejo have similar restriction levels.
Vacaville, CA
Solano County
Unincorporated Solano County has no separate 'tiny home' ordinance. A tiny house on a permanent foundation is regulated as an ADU or dwelling under Chapter 28; movable tiny houses on wheels are treated as recreational vehicles and cannot be used as permanent residences outside permitted situations.
View full Vacaville rules →Vallejo, CA
Solano County
Vallejo regulates tiny homes differently based on whether they are on a permanent foundation or on wheels. Zoning and minimum square footage requirements apply.
View full Vallejo rules →Key Facts Comparison
| Fact | Vacaville | Vallejo |
|---|---|---|
| Dedicated tiny-home ordinance | None in unincorporated County | - |
| On foundation | Regulated as ADU/dwelling (Ch. 28) | - |
| Minimum ADU floor area | 380 sq ft (efficiency exceptions) | - |
| On wheels | Treated as RV - not a permanent residence | - |
| State law | ADU rules per Gov. Code 66310 et seq. | - |
| Foundation | - | Treated as dwelling |
| On Wheels | - | RV classification typically |
| Min Size | - | 400 to 800 sq ft varies |
| ADU Path | - | May allow as secondary |
Highlighted rows indicate differences between cities.
Vacaville FAQ
Can I live in a tiny home in unincorporated Solano County?
A tiny house on a permanent foundation can qualify as an ADU or dwelling under Chapter 28 if it meets ADU size, setback, and permit standards. Movable tiny houses on wheels are treated as RVs and are not permitted as permanent residences in most zones.
What size does a foundation tiny home need to be?
As an ADU, the unit generally must be at least 380 square feet, with limited efficiency-unit exceptions, and meet the four-foot side/rear setback. Confirm exact standards with the Planning Division before building.
Vallejo FAQ
Can I put a tiny home in my backyard?
Possibly under Vallejo ADU rules if on a permanent foundation. Tiny homes on wheels face stricter zoning limitations.
What is the minimum house size?
Vallejo typically requires 400 to 800+ square feet for a primary dwelling. ADU rules may allow smaller secondary units.
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