Building Division

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NEW!  Due to recent staff shortages and increased applications, the Building Division is experiencing delays in permit processing.  We have brought in additional outside consultant services and staff to minimize any delays.  We thank you for your patience and understanding at this time and look forward to returning to our normal level of service as soon as possible.  

Proposed Changes to the California Residential Building Code

The County of Napa Board of Supervisors has requested the Building department to provide recommendations of proposed changes to the California residential building code that would provide increased fire restrictive measures associated with light frame residential construction.

Through extensive research and consideration we addressed the areas that are most vulnerable to destruction caused by fire during an urban wildland fire event. The four areas addressed are as follows:

  1. Eave length
  2. Vented attics
  3. Accessory structures
  4. Deck and balconies

Please see Proposed Fire Resistive Measures for the details for the four (4) proposed changes we are suggesting to the board of supervisors for their consideration.

Change In Submittal Processes

In response to the County Health Order, we have implemented COVID-19 preventions protocols, including modifications to our submittal processes to reduce the need to visit our office.  

Please be aware due to the demand and workflow at this time emails and phone calls are taking 3-5 business days for a response.  

We thank you in advance for your patience and ask that our clients allow us to reply to your email or phone call as calling or emailing multiple times adds to the backlog and prevents other clients from receiving our services in a timely manner.  

For New Submittals 

  • Email your COMPLETED permit application to [email protected] with a clear and thorough scope of work. Do not forget to enter the valuation.  In subject line of email please include what type permit you are applying for (i.e. Application for reroof permit).
  • Use the Scope of Work form if needed: )
  • We will create a permit number and assess fees based on the information in your scope of work. (Additional fees will be assessed as needed once the plans have been processed. Credits will be applied for fees paid if determined they were not necessary.)
  • You will then receive an email with the permit number and amount due for plan check as well as instructions for submitting your plans. 

For Resubmittals (Responding to Comment Letters) and Alteration Requests (Request to alter an Issued Permit):

Include the following items and either mail them in or bring them into our office (8am-4pm Monday through Friday) and place them on the cart marked for drop-offs – No plastic bags/report covers etc. Once processed, the applicant will either be contacted to provide additional details or the plans will be routed for Plan Check. 

  • Completed and Signed Resubmittal form or Completed Alteration Request form
  • Comment response letter for resubmittal or a narrative of changes if needed for Alteration Request
  • 3 complete sets of plans (If alteration cloud and mark with delta all the changes and include valuation change.)
  • 2 sets of updated supplemental documents-do not bring in previously submitted duplicate sets

Related Links:
Scope of Work
Residential Application Form
Commercial Application Form

Please note: due to COVID-19 Prevention Protocols, Same Day Over-the-Counter reviews are currently not available; as an alternative, we have implemented an Express Review Process to allow for expedited review of eligible permit types. For more information.

The 2019 California Building Standards Code (California Code Regulations, Title 24) was published on July 1, 2019, with an effective date of January 1, 2020. As of January 1, 2020, all applications for building permits will follow the 2019 California Building Code (CBC) (2019 Title 24 Code of Regulations).

  • For new submittals: Applicants will not be able to submit any documents that reference previous building codes (2016 CBC, etc.) Your submittal will only be accepted if it referenced the 2019 Codes.
  • For resubmittals on permit applications (not yet issued) submitted in 2019 or prior, follow the code in effect at the time of original submittal.
  • For revisions on all issued permits effective January 1, 2020 please reference the code in effect at the time of original submittal.

New Inspection Scheduling System!  As of April 1, 2020, we have a new Automated Phone System for scheduling your Building Inspections via phone or text.  Please refer to the Inspections and Select Text Scheduling Guide (Flier) and our handy Automated Inspection Scheduling System Tri-Fold Guide to keep handy in your car. Before you call in to the new automated scheduling system, please review the Guide, then call or text to schedule your inspection(s), and make sure you receive a confirmation for each type of inspection you are scheduling.

Online Permit Center (OPC) - Check Status of Your Permit

Want to find the status of your permit? Visit the OPC website. See "How to check the status of your permit" (PDF)  for step by step directions on how to check the status.

Notice - Deferred Submittals

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.

Fire Related Information

If you have been affected by the recent fires, visit the Rebuilding After the Fire website.

Building & Development

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

Email Building Division

  1. Services Areas
  2. Programs & Quick Links
  3. Other Department Information

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 inches by 36 inches.

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.