Shed permit rules in Rock County, WI — also referred to as storage shed, backyard shed, or accessory building regulations — set size limits, setbacks, and when a building permit is required.
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.
Sheds and detached garages are 'accessory buildings' governed by the zoning of your town, village or city. In towns that adopted county zoning, Wis. Stat. 59.69 lets the county regulate the location, height and setback of buildings. Standards vary by district. Example from the Town of Union (Rock County) A-1 zoning ordinance dimensional table below. Most towns also require the principal home to exist before an accessory structure is built, and many require a zoning permit for structures over a set square footage. Verify size thresholds and setbacks with your town clerk or the county PECD office.
A shed placed inside a required setback or built without a permit may have to be moved or removed, plus zoning forfeitures set by the local ordinance.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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