Building permits, zoning and land rules in Florence County, Wisconsin

Yes. Wisconsin's Uniform Dwelling Code requires a building permit for a new one- or two-family dwelling in Florence County, and work starts only after plans are approved and the permit is issued and posted¹. Where Florence County is the enforcing authority, its ordinance also requires a permit for covered construction and additions and for alterations above $2,500 in a twelve-month period⁶. Structural changes and major mechanical extensions require permits, while re-siding, re-roofing, interior-surface finishing and cabinetry are exempt under the county ordinance⁶. County UDC fees are set by County Board resolution rather than as a fixed ordinance amount⁶.

Start with the Florence County Planning, Zoning & Solid Waste Department at 501 Lake Avenue in Florence; the zoning office can be reached at 715-528-3430 or ksleeter@florencecountywi.gov⁷. The Florence County Zoning Administrator administers the county sanitary ordinance⁴. For new-home building permits, the Wisconsin Department of Safety and Professional Services lists Florence County as delegated to administer the Uniform Dwelling Code in towns, cities and villages that have no delegated authority of their own; a municipality with its own authority issues building permits itself². Florence County's ordinance applies where a municipality without a UDC program has adopted a resolution requesting county enforcement⁶. Ask the zoning office to confirm the issuer and inspector for the parcel before filing; septic permits stay with the county either way⁷. For county-trunk access questions, contact the Florence County Highway Department at 5471 CTH N in Florence or 715-528-4253⁸. A state-highway connection requires a WisDOT permit⁹.

Yes, but general county zoning is not automatically identical in every town. Florence County publishes general zoning districts for unincorporated areas or applicable portions, and the ordinance takes effect within a town only after town-board approval and filing of the approving resolution³. Current adoption status for every Florence County town could not be confirmed, so ask the Planning, Zoning & Solid Waste Department which ordinance and district govern the parcel^3,7. County shoreland, wetland and floodplain zoning applies countywide⁵. Florence County regulates land division, but the applicable thresholds and procedures could not be confirmed; ask the zoning office before splitting a parcel^7,10.

The Florence County Zoning Administrator administers the county sanitary ordinance⁴. A valid state sanitary permit is required before a private sewage system is installed or modified⁴. A county sanitary permit is also required for covered repair or reconnection work and before constructing a non-plumbing sanitation system⁴. The Zoning Administrator inspects installations and modifications, and must receive notice for final inspection of every private sewage system installed, modified or reconnected⁴. The county application includes a site plan, approved soil test, applicable system plans, required agreements and plans, and the fee⁴. County soil data rates 0% of soils as free of severe limitations for a conventional drain field, so make the soil test an early purchase contingency¹¹. A building with plumbing must connect to public sewer where available; if sewer later becomes available, the private system must be disconnected within one year⁴.

We could not confirm a countywide rule allowing private-land RV occupancy, temporary camping or tiny-home occupancy in Florence County. General zoning depends on town approval, so ask the Planning, Zoning & Solid Waste Department which zoning ordinance and district apply before placing or occupying a unit^3,7. Florence County permits a non-plumbing sanitation system only when the served building has no water service or plumbing; adding plumbing or running water requires another acceptable sewage-disposal method⁴. Non-plumbing systems are prohibited on or adjacent to lakes and lake back lots except in the listed public, campground, group-camp and remote-location situations⁴. We also could not confirm a countywide minimum dwelling size, so ask the zoning office about the parcel's district before choosing a tiny-home design⁷.

1. Ask the Planning, Zoning & Solid Waste Department which zoning ordinance and district apply to the parcel^3,7.
2. Obtain applicable floodplain, zoning and land-use approvals before the building permit¹.
3. If public sewer is unavailable, complete the soil test and sanitary-permit application; if the home will use a private well, obtain the sanitary or well permit from the county or municipality^1,4.
4. Confirm whether the county or the town's own inspection department issues the UDC building permit².
5. Submit complete plot, erosion-control, foundation, floor-layout, cross-section and elevation plans, thermal-envelope documentation, the application, fees and copies of related permits¹.
6. An owner who occupies or will occupy the home may take out the construction and erosion-control permits, but other permit and licensing requirements still apply¹.
7. Resolve road access with the Highway Department or WisDOT, depending on the road^8,9.
8. After permit issuance, schedule each inspection phase before covering the work and follow the local inspector's instructions¹.

Put septic feasibility first: 0% of Florence County soils are rated free of severe limitations for a conventional drain field¹¹. Check the parcel's exact zoning jurisdiction, because general county zoning depends on town adoption while shoreland, wetland and floodplain controls apply countywide⁵. About 85.1% of the county has a slope of 15% or less, but 89% is wooded, so access and clearing can matter even on gentle ground¹¹. Federal land accounts for 27.7% of the county; verify boundaries and legal access rather than assuming an adjoining public tract provides access¹¹. The nearest city of 100,000 or more is about 94 miles from the county center, which makes contractor scheduling and material delivery worth pricing early¹¹. The median property-tax bill is about $2,224 per year, with an effective rate near 1.3%¹¹.