ADU Permits: Fairfield vs Vallejo
How do adu permits rules compare between Fairfield, CA and Vallejo, CA?
Fairfield, CA
Solano County
Fairfield must approve or deny ADU permit applications ministerially within 60 days under Gov Code §65852.2. Applications go through the Fairfield BUILD portal with site plan, floor plan, elevations, and Title 24 documentation. Typical review is 4-8 weeks. No discretionary hearings allowed for code-compliant ADUs.
View full Fairfield rules →Vallejo, CA
Solano County
No data available yet for Vallejo.
Key Facts Comparison
| Fact | Fairfield | Vallejo |
|---|---|---|
| Review Deadline | 60 days (state law) | - |
| Process Type | Ministerial / by-right | - |
| Typical Timeline | 4-8 weeks plan review | - |
| Apply Online | Fairfield BUILD portal | - |
| School Fees | ADUs ≥500 sq ft only | - |
| Owner-Occupancy | Not required (ADU); required (JADU) | - |
Highlighted rows indicate differences between cities.
Fairfield FAQ
What happens if Fairfield doesn't approve my ADU permit within 60 days?
Under Gov Code §65852.2(b), an ADU application not acted upon within 60 days is deemed approved by operation of law if it complies with state standards. Send a written notice to the Building Official to invoke this remedy.
Do I need to live in my Fairfield ADU as the owner?
No, owner-occupancy is not required for ADUs (Gov Code §65852.2 was amended to remove that requirement through 2024). JADUs still require owner-occupancy of either the JADU or the main house.
Vallejo FAQ
No FAQs available.
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