Building permits, zoning and septic rules in Eau Claire County, Wisconsin

At a glance

Building permit

Required for covered new one- and two-family homes under Wisconsin's UDC¹²

County zoning

General zoning districts apply only in townships that approved the county ordinance; shoreland, floodplain and nonmetallic-mining overlays apply in every township⁵

Septic permit

County Health Department issues the sanitary permit, required before a building or land-use permit in most townships³

Owner-builder option

An owner who currently occupies or will occupy the home may take out the UDC construction and erosion-control permits⁶

Septic inspection

Installation inspection is required, followed by a visual inspection at least once every 3 years⁷⁸

Shoreland setback

Buildings must sit at least 75 feet back from the ordinary high-water mark in the shoreland zone⁹

Driveway onto a state highway

Needs a WisDOT connection permit; no fee to apply¹⁰

Private well

Obtain the applicable well permit or approval before constructing a home that will use a private well¹¹

Who to call

Contact details are copied from each office’s official page and were checked against it on September 29, 2026.

Do you need a building permit in Eau Claire County, Wisconsin?

Yes. Wisconsin's Uniform Dwelling Code (UDC) governs new one- and two-family dwellings, including stick-built and modular homes and manufactured-home installations, and a UDC permit is required for those projects¹²¹. In unincorporated Eau Claire County, the Land Use Division also requires a permit for construction, movement or structural alteration of a building, or a change in land or building use, including development of vacant land²¹³. If the home will use a private septic system, its sanitary permit generally has to be issued first¹⁴⁴. New one- and two-family dwellings require footing, foundation and reinforcement, rough-work, insulation and final inspections by the inspector named on the UDC permit¹⁵. Occupancy follows a final inspection with no major health or safety violations, although we could not confirm that Eau Claire County issues an occupancy certificate for every covered dwelling¹⁶.

Who issues permits in Eau Claire County, and how do you reach them?

For a building permit in unincorporated Eau Claire County, call the county Land Use Division at 715-839-4741 or email [email protected]; its office is in the Eau Claire County Courthouse, 721 Oxford Ave, Suite 3344, Eau Claire, WI 54703¹³. For a septic sanitary permit, call the county Health Department at 715-839-4718 or email [email protected]; its office is in the Eau Claire County Government Center, 720 2nd Ave, Eau Claire, WI 54703¹⁷. A sanitary permit is required before a private septic system can be installed, repaired, modified or reconnected, and before a building or land-use permit can be issued in most townships⁴. Cities and villages handle their own zoning, and a township outside county zoning may be unzoned or administer its own ordinance, so confirm the zoning authority for the parcel before filing⁵¹⁸.

Does Eau Claire County have zoning, and what does that mean for your land?

Eau Claire County has zoning, but its rules do not cover every place in the same way. General county zoning districts apply only in townships that approved the county ordinance, while shoreland, floodplain and nonmetallic-mining rules apply in every township⁵. The county GIS publishes agricultural, residential, commercial, industrial and forestry classifications, including large-lot single-family and rural-homes districts, but the layer does not show which townships adopted county zoning or prove that a listed district governs a particular parcel¹⁹. Cities and villages zone themselves, and a township outside county zoning may be unzoned or administer its own town ordinance⁵¹⁸. Confirm both the governing jurisdiction and the parcel's mapped district before relying on a use, lot-size, setback or height assumption. Near a lake, river or stream, the statewide shoreland standard generally places buildings at least 75 feet from the ordinary high-water mark, subject to listed exceptions and setback averaging where an existing development pattern qualifies⁹.

How do septic permits work in Eau Claire County?

The Eau Claire County Health Department issues sanitary permits for private onsite wastewater treatment systems (POWTS), and a home using private sewage needs the applicable sanitary permit³²⁰. In most townships, the sanitary permit must be issued before the building or land-use permit⁴. Wisconsin DSPS administers the statewide POWTS program, while the local permit depends on approved plan review²¹. POWTS construction and installation must be inspected under the plan-review approval; contact the agency that issued the POWTS permit to arrange that inspection⁷. State rule also requires a visual inspection at least once every 3 years and servicing of an anaerobic tank when combined sludge and scum reach one-third of tank volume⁸. Only about 8.4% of Eau Claire County soils are rated without severe limitations for a conventional drain field, so do not price the parcel around a standard system until the site evaluation is complete²². We could not confirm which off-grid sanitation devices Eau Claire County will approve; ask the Health Department about both toilet waste and washwater before choosing a system²³¹⁷.

Can you live in an RV or tiny home on your land in Eau Claire County?

This guide could not confirm a countywide answer, and the pieces that exist point to "it depends on your township." Wisconsin's state park camping rules limit a campsite to one recreational vehicle and require a reservation, but those rules govern state park campgrounds, not occupancy of an RV on privately owned land, so they don't answer this question²⁴. Where your township has approved the county's general zoning ordinance, an RV or tiny-home occupancy question runs through that ordinance and the county's Land Use Division⁵¹³; where your township has not approved it, or where you're in a city or village, that municipality's own zoning controls and this guide has not verified it. A manufactured home is a more clearly defined path: one produced on or after April 1, 2007 is covered by the Uniform Dwelling Code and can be occupied once it passes a final inspection with no major health or safety violations, though local zoning and septic approval still apply on top of that²⁵. Call your township clerk or, in a county-zoned township, the county Land Use Division, before assuming an RV or tiny home can be a residence on a specific parcel¹³.

How do you build a home in Eau Claire County, step by step?

1. Identify the parcel's zoning authority and mapped district; general county zoning applies only in participating townships, while shoreland, floodplain and nonmetallic-mining rules apply in every township⁵¹⁹.

1. If the home will use private sewage or a private well, obtain the applicable sanitary or well approval; in most townships the sanitary permit comes before the building or land-use permit²⁰¹¹⁴.

1. Ask the Land Use Division whether it or DSPS is the UDC issuing authority for the site, because delegated applications go to the municipality and other applications go to DSPS through eSLA¹³²⁶.

1. Prepare the permit application, contractor license details and expiration dates, legible plans, required supporting data and the application fee²⁷²⁶.

1. An owner who occupies or will occupy the home may take out the construction and erosion-control permits, but that option does not erase trade-licensing requirements⁶.

1. Obtain a WisDOT connection permit if the driveway enters a state highway, then arrange the required construction inspections and pass the final inspection before occupancy¹⁰¹⁵¹⁶.

What should you check before buying land in Eau Claire County?

Confirm whether your parcel's township has approved the county's general zoning ordinance, since that determines who handles use, lot-size and setback questions, while the county's shoreland, floodplain and nonmetallic-mining overlays apply regardless⁵. Get a soil evaluation before you rely on a specific septic layout: only about 8.4% of Eau Claire County's soils are free of severe limitations for a conventional drain field, while about 79.8% of the county's land is gentle enough (15% slope or less) that terrain itself is rarely the limiting factor²²²⁸. If the parcel is near water, measure the 75-foot shoreland setback from the ordinary high-water mark before you site a structure⁹. Check whether any part of the site falls in a mapped floodway or floodfringe: floodway development is largely prohibited, and floodfringe structures need their first floor at least two feet above base flood elevation²⁹. If access runs to a state highway, plan for a WisDOT connection permit¹⁰. A typical home here carries an effective property tax rate near 1.4% and a median annual bill around $3,461³⁰³¹, with a typical home insurance premium near $1,245 a year³². If you're weighing a short-term rental, Wisconsin requires a DATCP lodging permit for any property rented to a tourist or transient, on top of whatever your township's or the county's zoning allows³³.

Watch-outs

• Eau Claire County's general zoning districts only bind townships that approved the county ordinance; the shoreland, floodplain and nonmetallic-mining overlays bind every township regardless. Confirm which applies to your parcel before assuming either way⁵.
• In most townships a sanitary (septic) permit has to be issued before your building permit; if your site isn't on public sewer, start the soil evaluation early so it doesn't delay your building permit⁴.
• This guide could not confirm a specific rule on living in an RV or tiny home on private land in Eau Claire County; ask your township or, in a county-zoned township, the Land Use Division before you buy¹³.

Sources

1. UDC (Uniform Dwelling Code / One- and Two-Family Dwellings), quoted and re-checked
2. Eau Claire County Planning & Development - Building Permits (2026 county census)
3. Delegated Agents for Private On-Site Wastewater Treatment System (POWTS) Plan Review (2026 county census)
4. Eau Claire County Health Department – Septic Systems (POWTS) Program (eauclairecounty.gov)
5. Eau Claire County Code Title 18, Sec. 18.04 Applicability (2026 county census)
6. Wisconsin’s Uniform Dwelling Code, quoted and re-checked
7. Private Onsite Wastewater Treatment Systems (POWTS), quoted and re-checked
8. Wisconsin Maintenance Program (Wisconsin statewide rule), quoted and re-checked
9. Wisconsin’s Shoreland Management Program (Wisconsin statewide rule), quoted and re-checked
10. State highway connection permits (driveways & more) (Wisconsin statewide rule), quoted and re-checked
11. Wisconsin’s Uniform Dwelling Code, quoted and re-checked
12. UDC (Uniform Dwelling Code / One- and Two-Family Dwellings), quoted and re-checked
13. Eau Claire County Land Use Division (eauclairecounty.gov)
14. Wisconsin’s Uniform Dwelling Code (Wisconsin statewide rule), quoted and re-checked
15. UDC (Uniform Dwelling Code / One- and Two-Family Dwellings), quoted and re-checked
16. Wisconsin’s Uniform Dwelling Code, quoted and re-checked
17. Eau Claire County Health Department (Environmental Health) (eauclairecounty.gov)
18. Local Land Use Regulations and Comprehensive Planning Status Inventory Project (Wisconsin statewide rule), quoted and re-checked
19. Layer: Zoning (ID: 0), quoted and re-checked
20. Wisconsin’s Uniform Dwelling Code, quoted and re-checked
21. Private Onsite Wastewater Treatment Systems (POWTS), quoted and re-checked
22. Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
23. Wisconsin Administrative Code, SPS 382 (Wisconsin statewide rule), quoted and re-checked
24. Camping Rules — Wisconsin State Park System (Wisconsin statewide rule), quoted and re-checked
25. Wisconsin’s Uniform Dwelling Code (Wisconsin statewide rule), quoted and re-checked
26. UDC (Uniform Dwelling Code / One- and Two-Family Dwellings), quoted and re-checked
27. UDC (Uniform Dwelling Code / One- and Two-Family Dwellings), quoted and re-checked
28. Share of land at 15% slope or less: Bolthole Index county data
29. Floodplain Development Basics (Wisconsin statewide rule), quoted and re-checked
30. Effective property tax rate: Bolthole Index county data
31. Median property tax bill: Bolthole Index county data
32. Typical home insurance premium: Bolthole Index county data
33. Lodging Establishments (Wisconsin statewide rule), quoted and re-checked

Written September 29, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.