Do I Need a Permit to Install a Generator in Wisconsin?
Permanent standby generators require electrical and possibly gas permits in Wisconsin. Portable generators do not need permits.
Yes, you typically need a permit. Requirements vary by municipality. Check with your local building department for specifics.
Where to Apply
Permit requirements, fees, and processing times vary by municipality. Check the specific requirements for your location:
Browse all jurisdictions →Frequently Asked Questions
Do I need a permit for a whole-house generator?
Yes. Permanent standby generators require an electrical permit (for the transfer switch and wiring) and a gas permit (for the gas line connection). Some municipalities also require a building permit.
What about a portable generator?
Portable generators do not require permits. However, they must be used outdoors and never connected directly to your home's wiring without a proper transfer switch (which does require a permit).
How far must a generator be from my house?
Most municipalities require permanent generators to be at least 5 feet from any opening (windows, doors, vents) and meet zoning setback requirements. Check local codes for specific distances.
Building in multiple cities?
See permit requirements for any Wisconsin municipality instantly. Compare fees, timelines, and processes side by side across your active jurisdictions.