Tiny home rules in Milwaukee County, WI — covering tiny houses on wheels (THOWs), park model RVs, and tiny home on foundation builds — determine where they are legal and how they get permitted.
Milwaukee County has no tiny-home ordinance. A tiny house on a foundation is a dwelling under the Wisconsin Uniform Dwelling Code and is zoned by your city or village; a tiny house on wheels is treated as an RV and cannot be a permanent residence without local approval.
Milwaukee County does not regulate tiny homes. A tiny house on a permanent foundation is a one- or two-family dwelling governed by the Wisconsin Uniform Dwelling Code (chs. SPS 320 to 325), which the city, village, or town enforces through its building inspector under SPS 320.06, and it must meet that municipality's zoning, including floor-area and setback rules under Wis. Stat. 62.23(7). A tiny house on wheels is generally classified as a recreational vehicle, and most municipalities do not allow it as a permanent residence outside a licensed park. Whether a tiny home is permitted is therefore a municipal decision. There is no county tiny-home permit, so confirm foundation, zoning, and utility rules with your municipality.
Living in a tiny house on wheels or an RV as a permanent residence without local approval, or building a foundation tiny home without a Uniform Dwelling Code permit, can bring forfeitures and orders to vacate the unit.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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