Administrative overview · FIPS 06055
Napa County permit authority
The first compliance decision is jurisdictional: identify the office with statutory authority over your parcel, then use its filing and inspection sequence to keep the project moving.
Jurisdictional status
County
This county profile is the primary starting point for unincorporated-area permitting.
Responsible agency
Napa County Planning, Building & Environmental Services, Building Division
For a project in or near Napa County, this office is the identified point of contact for permit intake, statutory code enforcement, plan review coordination, and inspection release conditions. Confirm the parcel’s boundary and project type before relying on the county lane.
Direct contact
(707) 253-4417; inspection line (707) 253-4416
Call before mobilizing if the project has a boundary, occupancy, fire, septic, or utility question.
Permit counter
Napa County Building Division, 1195 Third Street, 2nd Floor, Napa, CA 94559
Operating hours
Monday-Friday, 8:00 a.m.-5:00 p.m.; Permit Center walk-in hours 8:00 a.m.-4:00 p.m.; appointments by request 8:00 a.m.-5:00 p.m.; closed county holidays.
Review expectation
Express review: 3-5 business days; Quick review: 7-10 business days; Standard review: 28 business days, depending on project type and size. Incomplete submittals and corrections extend the timeline.
Compliance workbench
Choose the next project decision.
Apply online
Open the verified digital gateway, application form, and review timeline.
Open guide →Fees & penalties
Understand fee schedules, enforcement exposure, and stop-work liabilities.
Open guide →Codes & exemptions
Read the code framework, minor-work exemptions, and inspection lane.
Open guide →Agency website
Visit the primary public source for current notices and contact changes.
Open guide →Source trail
Official sources for this profile
Use these direct agency or licensing links to confirm current instructions before you file, pay, or schedule work. External pages control if their information differs from this directory.
Project questions
Frequently asked questions for Napa County
Who handles permitting for this jurisdiction?
Napa County Planning, Building & Environmental Services, Building Division is the identified county-level authority for this profile. Confirm that the property is in its service area before filing.
How should I begin an application?
Begin with the online permit gateway listed in the application guide. If the portal does not recognize the address or project type, contact (707) 253-4417; inspection line (707) 253-4416.
How long might review take?
Express review: 3-5 business days; Quick review: 7-10 business days; Standard review: 28 business days, depending on project type and size. Incomplete submittals and corrections extend the timeline.
How are inspections scheduled?
Schedule building inspections through the Napa County Online Permit Center or call the automated inspection line at (707) 253-4416. Applicants should use the county inspection instructions and have the permit card and approved documents available onsite; a reinspection fee may apply when work is incomplete or corrections have not been made.
Which codes and exemptions should I review?
Napa County adopted the 2025 California Building Standards Code for the 2026 cycle, with Title 15 local amendments. The county materials identify the California Building Code (Volumes I and II), Residential Code, Plumbing Code, Mechanical Code, Electrical Code, Energy Code, Fire Code, Existing Building Code, Historical Code, Green Building Standards Code, and referenced standards; local amendments address Napa's climatic, geological, topographical, winery-cave, fire, WUI, roof, and sprinkler conditions. Napa County's current Title 15 materials identify qualifying minor work exempt from permits, including painting, papering, tiling, carpeting, cabinets, countertops, and similar finish work when it does not change dimensions between walls, sinks, plumbing fixtures, electrical outlets, built-in appliances, or service panels. The county Code Compliance FAQ also identifies one-story detached sheds or playhouses up to 120 sq ft without utilities and fences no higher than 7 ft as common exceptions. Other California Building Code exemptions may apply only when their conditions are met; zoning, fire, electrical, plumbing, mechanical, and other approvals can still be required.