Fences in unincorporated Marathon County are regulated under Section 17.401.05 (Fence and Wall Regulations) of the county Zoning Code (Chapter 17), administered by the Marathon County Conservation, Planning and Zoning Department (715.261.6000). Specific height limits depend on the underlying zoning district and yard location (front, side, rear, corner sight-triangle). Marathon County is undertaking a 2026 update to Chapter 17 that includes simplified fence rules and possible increases to allowed heights, with public requests for 8-foot residential privacy fences. Cities and villages within the county have their own zoning codes and fence rules that supersede county rules within their limits.
Marathon County exercises county zoning authority under Wis. Stat. 59.69 in towns that have adopted county zoning. Section 17.401.05 of Marathon County Code Chapter 17 contains the Fence and Wall Regulations applicable in those zoned towns. Specific permitted fence heights depend on the zoning district (residential, agricultural, commercial, industrial) and the yard the fence is in. Corner-lot vision triangles at intersections impose lower height limits to preserve driver sightlines, regardless of district. Wisconsin's 'spite fence' statute Wis. Stat. 844.10 (and the older 844.11 lateral-support principles) allow neighbors to seek civil relief for malicious fences erected primarily to annoy adjoining owners; this is enforced in circuit court, not by the county. Marathon County is preparing a 2026 update to Chapter 17 that staff have indicated will simplify and clarify fence rules and may increase the maximum permitted residential fence height (with public requests focused on 8-foot privacy fences). Until that update is adopted, the current Section 17.401.05 standards remain in effect. Cities and villages in Marathon County (Wausau, Rothschild, Schofield, Mosinee, Marathon City) administer their own zoning codes with separate fence rules, and townships that opted out of county zoning enforce their own town zoning. Always confirm the underlying zoning and the current section text with the Conservation, Planning and Zoning Department at 1100 Lake View Drive, Suite 400, Wausau, WI 54403, before constructing any fence.
Building or replacing a fence that exceeds the height permitted by Section 17.401.05 in the applicable zoning district can result in a zoning violation notice from Marathon County Conservation, Planning and Zoning. Owners are typically required to bring the fence into compliance by lowering or removing it, or apply for a variance through the county Board of Adjustment. Continued non-compliance can lead to forfeiture citations under Chapter 17's enforcement provisions. Fences placed within road rights-of-way or vision triangles can be ordered removed.
See how Marathon County's height limits rules stack up against other locations.
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