Do I need a permit for shed or accessory structure in Unincorporated Juneau County?

It depends. Whether shed or accessory structure needs a permit in Unincorporated Juneau County comes down to the details of your project.

Under SPS 320.05(4) the UDC does not apply to detached garages or other detached accessory buildings, except the fire separation distances in SPS 321.08(1). There is no statewide square-foot exemption for sheds; the model IRC 200 square foot figure is not Wisconsin law, and whether a permit is needed depends on the local zoning and building ordinance. As of Sept. 1, 2026, SPS 316.012 requires an electrical permit from the designated inspection agency before installing a new or added electrical service, feeder or branch circuit serving a structure not already covered by an SPS 316 or SPS 320 permit, unless exempted by rule or statute. A shed that will have electricity, plumbing, or a permanent foundation falls outside the usual small accessory building exemption, which generally covers simple unpowered structures only. Electrical and plumbing work each normally require their own permit and inspection even when the structure itself would have been exempt, and many jurisdictions require a licensed electrician or plumber to pull them. Zoning setbacks, height limits, and lot coverage are reviewed separately from the building permit, so confirm placement with your local department before the shed is delivered or poured.