Accessory Structures in Rock County, WI (2026)
1 county-level rule, plus city-specific rules for 2 cities in Rock County, Wisconsin.
Verified from official government sources
Note: These county rules apply to unincorporated areas of Rock County. If you live within an incorporated city, that city's own rules apply: see the city list below.
Shed & Carport Rules
In Rock County's unincorporated towns, accessory buildings like sheds must meet the district's yard setbacks. In the Town of Union's A-1 district, accessory buildings need a 10-foot side setback and buildings top out at 35 feet.
Shed and Accessory Building Rules
Some RestrictionsTown of Union (Rock County) Zoning Ordinance ch. 17, A-1 District dimensional standards
Minimum Side Yard Setback: Principal Buildings 20 ft. on each side; Accessory Buildings 10 ft. on each side. Maximum Building Height 35 ft.
Accessory Structures by City in Rock County
2 cities in Rock County have their own accessory structures rules. Each link goes to that city's dedicated page with code citations.
All Rock County ordinances
See every category we cover for Rock County: parking, noise, fences, fires, animals, pools, and more.
Rock County Ordinance Hub →