Clear, accurate permit requirements for every home improvement project — from sheds to solar panels.
Most structural changes, electrical work, plumbing, HVAC, and projects over a certain square footage require a permit. Small cosmetic work (painting, flooring, minor repairs) typically does not. Check your specific project type below.
Select your project to get specific requirements, costs, and when a permit is — and isn't — required.
Select your project type and state to get local permit requirements:
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Unpermitted work can surface during a home sale, causing delays or price reductions. Buyers' inspectors and lenders often flag unpermitted additions or electrical work.
Permits ensure work is inspected to code. Electrical fires, structural failures, and plumbing leaks are more common in unpermitted work.
Fines for building without a permit can range from $500 to over $10,000. In some cases, you may be required to demolish and redo the work. Learn about penalties →
Your homeowner's insurance may not cover damage or liability from unpermitted structures or work. A permit protects your policy.
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