Guides / DIY or hire
Permits and codes: when you need one
Skipping a required permit can cost more later.
Building permits exist so work is checked for safety. Rules vary by city and county, but some patterns are common across the US.
Often need a permit
- New electrical circuits and panel work
- Plumbing changes beyond like-for-like fixture swaps
- Water heater replacement in many areas
- Structural changes, like removing a wall
- Roof replacement, decks, fences over a certain height, and additions
Usually don't
- Painting, flooring and cabinets
- Replacing a faucet or light fixture like-for-like (check locally)
- Small repairs that don't change systems
Why it matters
- Unpermitted work can cause problems when you sell or make an insurance claim
- You may have to open walls for inspection later
- Inspections catch safety problems
How to check
Call or visit your local building department's website. Many list which jobs need permits and let you apply online.
General information. Your local building department has the final word. Home Nickel Pro isn't paid by any contractor, store or brand.