Do I Need a Permit to Wire a Garage or Outbuilding in Wisconsin?
Running electrical to a detached garage or outbuilding always requires an electrical permit in Wisconsin.
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 to add electricity to my garage?
Yes. Running a new electrical circuit to a detached structure requires an electrical permit. The installation must meet NEC and Wisconsin code requirements for underground or overhead feeders.
Can I run an extension cord to my garage instead?
Extension cords are not a legal substitute for permanent wiring. Permanent electrical installations in outbuildings must be properly permitted and inspected.
What electrical code requirements apply?
A detached garage requires its own sub-panel or disconnect, proper grounding, GFCI protection for all receptacles, and at least one dedicated lighting circuit.
Building in multiple cities?
See permit requirements for any Wisconsin municipality instantly. Compare fees, timelines, and processes side by side across your active jurisdictions.