Before You Build in Mosinee, WI: Permit & Rule Checklist (2026)

City of Mosinee Code Sec. 42-788 caps fences, walls, hedges, and shrubbery at 6 feet above ground level in residential areas. Corner side yards are limited to 3 feet, and an 8-foot maximum applies along lot lines adjacent to nonresidentially zoned property. Front yard fences must be decorative only, no more than 50% opaque, and capped at 4 feet (decorative post caps may add up to 12 inches). A 3-foot vision-clearance limit applies within 25 feet of any street intersection. Building permits are required for fences.

WI Stat. §90.02 to 90.14 provides line fence cost-sharing for rural/agricultural land. Urban residential fences: each owner responsible for their own.

Mosinee enforces pool safety requirements including anti-entrapment drain covers (VGB Act), barriers, and depth markers. WI Stat. §145.17 governs.

Mosinee requires pool barriers to prevent unsupervised child access. Minimum 48-inch height. Self-closing, self-latching gates. WI Stat. §145.17.

Mosinee requires building permits for pools, spas, and hot tubs. WI Uniform Dwelling Code governs. Inspections required.

The City of Mosinee's Zoning Code (originally updated in 1998) is administered by the City Clerk's office and Building Inspector and codified in the Code of Ordinances on Municode. Mosinee has not adopted a stand-alone accessory dwelling unit (ADU) chapter; instead, additional dwelling units are governed by the underlying residential zoning district standards (single-family, two-family, multi-family) plus accessory use and accessory structure provisions. A second dwelling unit on a single-family lot generally is not a permitted accessory use unless the lot meets the density, lot area, and dimensional requirements of a two-family or multi-family district. Building permits and zoning permits are required and issued through the City of Mosinee Building Permits process.

Sheds in Mosinee are accessory structures regulated under Chapter 42 (Land Use and Regulation), Article II Zoning of the Mosinee Code of Ordinances. The City of Mosinee Building Inspections division requires a building permit for any garage or shed. Specific setback distances depend on the underlying residential zoning district (R-1 through R-5) and are administered by the City Clerk's office and the city's contracted Building Inspector. Sheds are also subject to Wis. Stat. 62.23 city zoning authority and the Wisconsin Uniform Dwelling Code (SPS 320-325).

Outdoor burning regulated by WI DNR and local ordinance. Mosinee may prohibit most open burning. Garbage burning always illegal. DNR permits required in protection areas.