Building Permits

Issuance of Building Permits

A building permit may be issued after plans are reviewed and approved by the Building Official. You will be contacted to pick up your permit and pay any outstanding fees due.

An owner-builder must sign the permit form in person. Contractors may authorize an employee to sign building permits. Contractors must obtain a business registration with the Town of Windsor when the permit is issued.

It is important to engage a Certified Access Specialist (CASp) in the event of new construction or alterations to a current facility in order to assess compliance with accessibility standards. This Notice to Applicants for Business License and Commercial Building Permits provides additional information regarding CASp services and other federal and state disability access laws.

Building Permit Application
Smoke Alarm and CO Detector Affidavit

Time Limits

You must pick up your permit within 180 calendar days from the date you applied for it. You may submit a written request for a one-time extension before the 180th day. If this period ends without your picking up your permit your plan review fee will be forfeited.

Your building permit shall expire two years from the date of issuance. You may extend your permit by written request to the Building Official for an additional one year prior to your permit expiration; no permit shall be extended more than once.


As your construction project progresses, building inspections by the Town of Windsor are required. The types of inspection required are listed on the back of your copy of the Building Permit.

It is the responsibility of the person performing the work to contact the Building Inspection Division to schedule inspections. Inspections are requested and scheduled by calling the inspection request line at (707)522-8346.

Inspection requests received after 5:00pm will not be scheduled for the following day but will be scheduled on the subsequent day the inspection was requested. Most inspections can be requested for either morning or afternoon. Specific times of the day cannot be scheduled.

It is the responsibility of the permit holder to request inspections for each phase of the work upon its completion prior to the commencement of the next stage of construction.

Due to COVID-19 Please Note: There are two types of inspections that the Town will be conducting.

Major inspections will require an on-site Town inspector. To schedule a major inspection please call: (707)522-8346. Major inspections will only be performed on Mondays and Thursdays.

Minor inspections will be inspected virtually with Town staff:

  • Electrical panel-(Photo should show wiring connections, ground wires, circuit labels, and location of panel on wall)
  • Solar installation-(Photo should show panels wiring, grounding, and labels)
  • Water heater-(Photo should show entire water heater, relief valve, exhaust vent, and gas supply or electrical supply)
  • Reroof-(Photo should show entire roof and type of material)
  • HVAC-(Photo should show entire unit and exterior unit if applicable)
  • Window replacement-(Photo should show exterior of all windows. Note the bedroom windows)

To schedule a minor inspection please call: (707)522-8346 or email Skye Barnett: with the address, building permit number, type of inspection, as well as a photo and/or video of the work to be inspected.

Changes to Plans

After a permit has been issued, the Building Official must approve any changes to the plans. Two sets of the proposed changes must be prepared by the architect, engineer and/or plan preparer, and submitted for review and approval.

Building Permit Counter Hours

Monday - Thursday 7:00am to 11:00am