How does the building permit process work for a home project?
Step 1: Application and review
The process starts when you or your contractor submits a permit application to your local building department. You'll typically need to provide detailed plans, a site plan, and sometimes engineering calculations. The department reviews the documents to ensure the work will meet building, electrical, plumbing, and energy codes.
Review times vary widely—from a few days for simple projects to several weeks for complex ones. Some jurisdictions offer expedited review for an extra fee. You'll pay a permit fee based on the project's value or square footage, and you may need to post a bond for certain work.
- Completed application form
- Two sets of construction plans (sometimes digital)
- Site plan showing property lines and setbacks
- Contractor's license and insurance information
- Energy compliance forms (e.g., Title 24 in California)
- Payment for permit fees
Step 2: Inspections and final approval
Once the permit is issued, work can begin. The permit card lists required inspections—such as foundation, framing, electrical rough-in, and final. You must call the inspection line to schedule each inspection when that phase is ready. The inspector visits, checks the work, and either approves it or notes corrections.
After all inspections pass, the building department closes the permit. For new construction or a change of use, you may need a certificate of occupancy. Keep all signed inspection records; you'll need them if you sell your home.
Common mistakes
- Starting work before the permit is issued—this can result in a stop-work order and double fees.
- Forgetting to schedule inspections at the right stages; covering up work before inspection means you may have to open it up again.
- Assuming the contractor will handle everything; as the homeowner, you are ultimately responsible for the permit being correct.
