ADU permit process in Vallejo, California
Solano County, California
Prepared by GetYourPermit editorial teamReport an error
We haven’t written Vallejo’s permit guide yet.
We publish permit process guides one city at a time, and we would rather publish nothing than guess at Vallejo’s rules using another city’s process. Permit steps, submittal requirements, and review timelines are set locally, so a guide copied from a neighboring city would be wrong in ways that cost you time.
Here is what is useful for Vallejo right now.
See the fee estimate for VallejoStart here instead — official and primary sources for Vallejo
The live City Building Division page says Building Permit fees are expected to increase effective September 14, 2026, and confirms that applications on or after that date use the new schedule.
Accessed August 29, 2026
What to ask the Vallejo building department
- The current building permit fee schedule, and the date it took effect.
- Whether development impact fees apply at your square footage — many California cities waive them for ADUs of 750 sq ft or less.
- Plan submittal requirements: what drawings they expect, in what format, and whether submittal is online or in person.