Napa County, CA
Building Division
How permitting works in California
California counties play a massive administrative role, as they are legally required by the state to enforce the California Building Standards Code in all unincorporated territories. The county must maintain a fully staffed building department capable of reviewing plans and performing inspections for everything from single-family homes to large-scale agricultural and commercial projects.
Mandatory enforcement by every City and County.
Contact Information
- Phone
- 707-253-4540
- Office Hours
- Monday - Friday Office Hours: 8 A.M. to 5 P.M. Permit Counter Walk-in Hours: 8 A.M. - 4 P.M.
- Website
- https://www.napacounty.gov/
- Permit Portal
- https://www.napacounty.gov/3492/Building-Division
Start your building project in Napa County, CA
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