ADU Impact Fees: Vacaville vs Vallejo
How do adu impact fees rules compare between Vacaville, CA and Vallejo, CA?
Vacaville, CA
Solano County
Under California Government Code 66322(a) (formerly 65852.2(f)(3)) and VMC 14.09.122, Vacaville ADUs under 750 square feet are exempt from all city impact fees. ADUs 750 sq ft and larger pay impact fees proportional to the ratio of ADU floor area to primary dwelling area. Standard building, plan-check, and utility connection fees still apply at any size.
View full Vacaville rules →Vallejo, CA
Solano County
No data available yet for Vallejo.
Key Facts Comparison
| Fact | Vacaville | Vallejo |
|---|---|---|
| Authority | Gov. Code 66322(a) (formerly 65852.2(f)(3)) | - |
| Sub-750 sq ft ADU | Exempt from all city impact fees | - |
| 750+ sq ft ADU | Proportional impact fees | - |
| School Fees | Waived under 750 sq ft | - |
| Refund Window | 90 days (Gov. Code 66020) | - |
Highlighted rows indicate differences between cities.
Vacaville FAQ
Are Vacaville ADUs charged impact fees?
ADUs under 750 sq ft are exempt from all city impact fees under California Government Code 66322(a) (formerly 65852.2(f)(3)). This includes Capital Facilities, Park, Traffic Impact, and Vacaville Unified School District facility fees. ADUs 750 sq ft and larger pay proportional fees based on size relative to the primary dwelling.
What does a Vacaville ADU cost to permit?
Permit and plan-check fees vary by valuation under Vacaville's Master Fee Schedule, typically $5,000-$10,000 for a detached ADU plus utility connection fees. Sub-750 sq ft ADUs are exempt from impact fees but still pay these permit fees plus PG&E electrical service upgrades and water/sewer connection charges through Vacaville Public Works Utilities.
Vallejo FAQ
No FAQs available.
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