Waukesha County's Basic Zoning Ordinance (Appendix A to the County Code, effective 12/11/2024) administers zoning in towns that elect county zoning, but does not classify fences as 'structures' - so fence heights are governed by the local town, village or city. The City of Waukesha caps residential fences at 6 feet under Municipal Code sec. 22.58, with a 3-foot maximum inside the vision triangle and no fences in required front yards. The Waukesha County Shoreland Protection Ordinance (Appendix B) applies within 1,000 feet of a navigable lake or 300 feet of a navigable river or stream and can affect fence placement. Most municipalities in the county follow a 4-foot front yard / 6-foot side and rear yard pattern.
Wisconsin has no statewide residential fence-height law - authority is delegated to municipalities through Wis. Stat. sec. 62.23, sec. 61.35 and sec. 60.61. Waukesha County's primary land-use document is the Basic Zoning Ordinance (Appendix A to the County Code, effective December 11, 2024), which applies to towns that have adopted county zoning and addresses use districts, setbacks, accessory structures, and bulk regulations. The county zoning code's definition of 'structure' does not include fences, which means fence-height limits are not set by the county zoning ordinance and are instead controlled at the city, village or town level. The City of Waukesha regulates fences in Section 22.58 of its Municipal Code: the maximum fence height is 6 feet outside vision triangles, the maximum height inside a vision triangle is 3 feet, and fences are not permitted at all in required front yards. Vision triangles are the area where two streets meet, a street meets an alley, or two alleys meet. Waukesha County's Shoreland Protection Ordinance (Appendix B) applies within 1,000 feet of the ordinary high water mark of a navigable lake, pond or flowage, or within 300 feet of a navigable river or stream, and may restrict fence placement near the shoreline through its setback and vegetative-buffer provisions. Fence rules vary across the county's 37 municipalities: Brookfield, Menomonee Falls, New Berlin, and Oconomowoc each have their own zoning chapters governing residential fence heights, materials, and setbacks. Permits are typically required for fence construction in the larger cities. Barbed wire, razor wire and electrified fencing are generally prohibited in residential zones across the county. Always confirm with the specific city, village or town before construction.
Building a fence over the local height cap, without a required permit, or inside a vision triangle triggers a stop-work order and a zoning citation from the local building or zoning department. Typical municipal forfeitures range from $100 to $500 per violation, with continuing violations accruing daily and after-the-fact permits costing more than standard permits. Non-conforming fences may be ordered modified or removed at the owner's expense. Shoreland-area violations under Waukesha County Appendix B can also draw county enforcement.
See how Waukesha County's height limits rules stack up against other locations.
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