Building & Development Division


Building DivisionBuilding Permits, Inspections & Code Compliance

Building Plan Review


About Us





Environmental Health

Code Compliance


Online Permit Center (OPC) Your place to find Permits and Application Status

Notice:Effective November 1, 2017; Napa County Building Department will no longer accept Deferred Submittals without prior approval by the Chief Building Official on all projects.  This includes Truss (Floor and Roof) Calculation Packages.  Please adjust your initial building plan submittals to include all of the required documents to submit a complete application package. Incomplete application submittal packages will not be accepted. 

Important!: Please be aware as of January 30th, Building Plan Check Staff will not be accepting drop in clients or appointments before 2PM daily.  All phone calls will be answered after 2PM daily with voicemail messages being returned within 24hr or the next business day.  Thank you for your patience and cooperation. 

Current: Effective July 1, 2016 there are new requirements for electrical permits related to well and septic installations. 



Building & Development

The Building & Development Division is available for consultation and permitting services weekdays (excluding holidays) from: For Permitting hours, click the more information link under CONTACTus


If you have questions about permitting, building codes, construction violations, or general building safety, please use the informational links provided, visit us at our public counter, or give us a call.

Main Phone:(707) 253-4417 Main E-mail:
Inspection Line : (707) 253-4416 Fax: (707) 253-4545

service areas

Documents, Forms & Information

Information and technical guidance on all types of projects via Division handouts, by phone, or in person at the Public Counter.

Permit Process & Application

Building and construction permitting process, plan submittal, plan review, permit issuance, document retention, development approvals required by others, and scheduling of inspections.

NOTE: Plan Sets are accepted with just three copies, but no larger than 24" x 36"

Construction Inspection

Next day inspection services for building, electrical, mechanical, plumbing, disabled access, energy efficiency, and monitoring of the inspection process.

Code Enforcement

Investigation of citizen complaints of County code violations, through inspection, notification, communication and issuance of citations.

Other Department Information

Quick Permit Plans

Quick Permits

Get a permit in 10-days! The Building Division offers permits in ten days or less for some select permit types. Is your project ready!

Learn more

Environmental House Planning

Current Project Information

Find documents and information about major projects, development applications, and other Department work programs.

Learn more!

Where Are We Heading?

Agricultural Protection Advisory Committee (APAC)

The County Executive Officer announces the newly created Napa County Agricultural Protection Advisory Committee. This ad hoc committee is intended to serve as an advisory committee to the Planning Commission for purposes of making recommendations to the Planning Commission on a variety of winery development and agricultural protection measures.

Agricultural Protection Advisory Committee


Temporary Certificate of Occupancy Procedures

Effective May 1, 2015 Temporary Certificate of Occupancy (TCO) Procedures/Applications will be changing. There will also be a deposit of $1017 to initiate the process.

Temporary Certificate of Occupancy Procedures
Application - TCO 2015