Building Permits: What Requires One and What Happens If You Skip It

Building permits exist to ensure construction work meets minimum safety standards set by your local jurisdiction. Many homeowners — and some contractors — try to skip them to save time and money. It almost always backfires.

Why Permits Matter

Permits trigger inspections. An inspector verifies the work was done correctly before it's covered up by drywall or roofing. Without that check, you have no independent verification that the work is safe or up to code.

Projects That Typically Require a Permit

Requirements vary by municipality, but these almost always require a permit:

• Structural changes (removing walls, adding rooms, additions)
• Electrical work (new circuits, panel upgrades, adding outlets)
• Plumbing work (adding or moving pipes, water heater replacement in most jurisdictions)
• HVAC installation or replacement
• Roof replacement (in most jurisdictions)
• New windows or doors that change the opening size
• Decks and patios above a certain height or size
• Basement finishing
• Fences above a certain height (varies widely)

Projects That Usually Don't Require a Permit

• Cosmetic work (painting, flooring, countertops, cabinets)
• Like-for-like fixture replacements (swapping a toilet, replacing a faucet)
• Minor electrical repairs (replacing outlets or switches, not adding circuits)
• Small sheds under a certain square footage

Always check with your local building department — rules vary significantly by city and county.

What to Ask Your Contractor

• "Will you pull the permits for this project, or am I responsible?"
• "What inspections are required and when?"
• "Will the final inspection be completed before I make my last payment?"
• "What happens if the work doesn't pass inspection?"

Red Flag

If a contractor says "we don't need a permit for this" for work that clearly should be permitted, or suggests you "save money" by skipping it — walk away. A legitimate contractor pulls permits as a matter of course.

Frequently Asked Questions

Who is responsible for pulling the permit — me or my contractor? In most cases the contractor pulls the permit, since they are the licensed professional doing the work. However, the permit is ultimately tied to your property. Always confirm in writing that your contractor will pull all required permits before work begins, and verify the permit is open before work starts.

What happens if I buy a home with unpermitted work? Unpermitted work becomes your problem when you buy the property. You may be required to bring it up to code, retroactively permit it, or in some cases demolish it. Always ask for a permit history from your local building department before closing on a home, and have your inspector specifically look for signs of unpermitted work.

Can I get a permit after the work is already done? Yes — called an after-the-fact or retroactive permit. The process varies by jurisdiction but typically requires an inspection of the existing work, and you may need to open up walls or ceilings so the inspector can verify what's behind them. It is always more expensive and disruptive than getting the permit upfront.