Mosinee, WI Building Setbacks & Zoning: Setback Rules (2026)

Section 42-169 of the City of Mosinee zoning code sets yard requirements for the R-1 single-family residence district. For the district's principal permitted use, single-family detached dwellings, rectories, parsonages and parish houses, the yard table requires a 30-foot front yard, a 10-foot interior side yard, a 20-foot corner side yard, and a 35-foot rear yard. Other permitted uses in R-1 carry deeper setbacks scaled to their size: educational and cultural institutions require a 50-foot front yard, 15-foot side yards and a 75-foot rear yard, while recreational and social buildings and religious institutions fall in between.

A footnote attached to the institutional and religious yard requirements adds one extra foot of side yard for every two feet a building's height exceeds 15 feet, so a taller institutional building pushes its own side yard out further. Accessory buildings generally follow the same yard requirements as the principal use they serve, but the code carves out specific exceptions: agricultural buildings require 100-foot front and rear yards and 50-foot side yards, buildings accessory to a single-family dwelling need only a 3-foot rear yard, and private boathouses have no yard requirement at all.

Roadside stands on agricultural lots need a 20-foot front yard and 50-foot interior side yard but no rear yard. Section 42-38(f) separately requires that where a residential lot abuts a more restrictive district, its side and rear yards along that boundary match the average of both districts' minimum requirements. Section 42-38(d) bars using any part of a required yard for another building or use, and bars counting the same open space toward the yard requirements of two different buildings.