Wisconsin permits
Do you need a permit in Wisconsin?
Wisconsin enforces the Uniform Dwelling Code (UDC) statewide for 1-2 family homes — one of the more consistent regimes in the country. Permits are issued by the municipality or county. Wisconsin requires a Dwelling Contractor certification for businesses pulling permits, and individual qualifier credentials. Electrical and plumbing have separate state licensing.
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These are statewide ranges. Get your exact Wisconsin cost for your zip code and project size.
Can a homeowner pull the permit?
Yes, in most cases. Owner-occupied primary residences may obtain a homeowner permit. Some trades (plumbing especially) still require licensed professionals on covered work.
Where to file: Municipal or county building inspection office. Milwaukee, Madison, Green Bay have online portals. Plan review 1-3 weeks. UDC consistency means fewer jurisdiction-to-jurisdiction surprises than most states.
Permits by trade in Wisconsin
| Trade | When required | Citation | Typical fee | DIY? |
|---|---|---|---|---|
| Plumbing | In-wall work, fixture changes, water heater, gas | WI Plumbing Code (SPS 382) | $60-$250 | No |
| Electrical | New circuits, panel work, service upgrades, EV charger | WI Electrical Code; NEC | $60-$250 | Conditional |
| Mechanical (HVAC) | Furnace/boiler, AC change-out, ductwork, refrigerant | WI Mechanical Code; UDC energy provisions | $75-$250 | No |
| Building (structural) | Additions, structural modifications, decks, finished basements | Uniform Dwelling Code | $100-$700 | Yes |
| Roofing | Re-roofs, structural deck repair | UDC / local | $60-$250 | Yes |
| Dwelling Contractor cert | Business credential to pull permits for hired work | WI SPS 305 | N/A | Yes |
Hover a Conditional or No entry for the homeowner rule. Always confirm with your local building department, since requirements vary by jurisdiction.
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