Unincorporated Eau Claire County, Wisconsin requires county building permits for construction, building movement, structural alterations and changes in land or building use1. New one- and two-family homes also require Wisconsin Uniform Dwelling Code permits through the delegated authority or DSPS2. The county Health Department issues septic sanitary permits, required before building or land-use permits in most townships3. County zoning is mapped, but the parcel's governing authority and applicable rules need confirmation45.
At a glance
- Building permit
- County building permit for construction and land-use changes; UDC permit for covered new homes12
- County zoning
- County districts are mapped; town approval, district applicability and overlay rules need parcel-specific confirmation46
- Septic permit
- County Health Department issues the sanitary permit, required before a building or land-use permit in most townships3
- Owner-builder option
- Owner-occupants may obtain UDC permits; plumbing and electrical licensing conditions still apply7
- Septic inspection
- Installation inspection is required, followed by a visual inspection at least once every 3 years89
- Shoreland setback
- Buildings must sit at least 75 feet back from the ordinary high-water mark in the shoreland zone10
- Driveway onto a state highway
- Needs a WisDOT connection permit; no fee to apply11
- Private well
- Obtain the applicable well permit or approval before constructing a home that will use a private well12
Who to call
Building permits
Eau Claire County Land Use Division
Building permits for new construction, additions, and structural alteration or change of land/building use in unincorporated Eau Claire County
Eau Claire County Courthouse, 721 Oxford Ave, Suite 3344, Eau Claire, WI 54703
Septic permits
Eau Claire County Health Department (Environmental Health)
Sanitary (POWTS/septic) permits, private well and septic inspections, and general environmental health for Eau Claire County
Eau Claire County Government Center, 720 2nd Ave, Eau Claire, WI 54703
Septic permits
Eau Claire County Health Department – Septic Systems (POWTS) Program
Explains the sanitary permit process: soil evaluation, plumbing plans, permit review, and when a sanitary permit must be in hand before a building or land-use permit can be issued
Contact details are copied from each office’s official page and were checked against it on October 12, 2026.
Off-grid gear
Going off-grid in Eau Claire County means bringing your own water and power. The kit we’d start with:
- Water Crystal Quest Filter any source — well, rain, or creek — to drinking-clean.
- Power Bluetti Solar generators and home battery backup for living off the grid.
- Septic Soil percolation test kit Run your own perc test before paying an engineer — the first thing a septic office asks about.
- Water Well water test kit Bacteria, nitrates, hardness — know what the well on a parcel is really pumping.
These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.
Do you need a building permit in Eau Claire County, Wisconsin?
Eau Claire County's Land Use Division requires a county building permit for construction, movement or structural alteration of a building, or a change in land or building use, including vacant-land development1. Wisconsin's Uniform Dwelling Code (UDC) also governs new one- and two-family dwellings, including stick-built, modular and manufactured-home installations13. Those homes require a UDC permit through the delegated municipality or, where municipal authority is absent, DSPS; ask the Land Use Division which authority serves your address141. New homes require footing, foundation and reinforcement, rough-construction, insulation and final inspections by the inspector identified on the UDC permit15. Occupancy follows a final inspection with no major health or safety violations; we could not confirm that Eau Claire County requires an occupancy certificate for every covered dwelling16.
Who issues building permits in Eau Claire County, and how do you reach them?
For a county building permit in unincorporated Eau Claire County, call the Land Use Division at 715-839-4741 or email landuse@eauclairecounty.gov; the office is in the Eau Claire County Courthouse, 721 Oxford Ave, Suite 3344, Eau Claire, WI 547031. Inside Altoona, the municipal Building Inspector issues building permits17. The county Health Department remains the sanitary-permit contact at 715-839-4718 or echealth@eauclairecounty.gov, at the Eau Claire County Government Center, 720 2nd Ave, Eau Claire, WI 54703183. Altoona also requires plumbing-supervisor approval before its private sewage permit becomes effective19. A county sanitary permit is required before a private septic system is installed, repaired, modified or reconnected, and before a building or land-use permit is issued in most townships3.
Does Eau Claire County have zoning, and what does that mean for your land?
Eau Claire County publishes zoning districts, but the county map alone does not establish which towns approved county zoning or which authority administers every mapped district420. The GIS lists agricultural, business, forestry, industrial, residential and rural-homes classifications, including large-lot single-family districts6. Ask the Land Use Division to confirm the parcel's governing ordinance, mapped district and applicable overlays before relying on a use or lot-size assumption51. Where county zoning applies, setbacks depend on district, road class and whether the structure is principal or accessory; county staff verify setbacks when a proposed structure is within 15 feet of the required minimum21. Near a lake, river or stream, Wisconsin's shoreland standard generally places buildings at least 75 feet from the ordinary high-water mark, subject to exceptions and qualifying setback averaging10.
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 permit322. In most townships, the sanitary permit must be issued before the building or land-use permit3. Wisconsin DSPS governs the statewide POWTS program, while local permitting still applies after approved plan review23. Eau Claire County is a delegated plan-review agent for at-grade, mound and pressurized in-ground systems up to 1,000 gallons per day, and for commercial non-pressurized in-ground systems up to 5,000 gallons per day24. The agency that issued the POWTS permit must be contacted for the construction and installation inspection required by the plan-review approval25. State rule also requires a visual inspection at least once every 3 years and tank servicing at the stated threshold9. 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 complete26. We could not confirm which off-grid sanitation devices Eau Claire County will approve; ask the Health Department before choosing a system18.
Can you live in an RV or tiny home on your land in Eau Claire County?
We could not confirm whether residential RV occupancy, temporary camping or tiny-home occupancy is allowed on private land in unincorporated Eau Claire County; ask the Land Use Division and your township clerk about the specific parcel15. The county zoning map does not settle town-specific ordinance applicability, so a mapped district alone is not an answer to an occupancy question6. A manufactured-home installation falls under Wisconsin's UDC permit and inspection requirements, but those construction approvals do not establish county land-use permission for the site2725. For any proposed residence using private sewage, arrange sanitary approval with the county Health Department before relying on the building plan223.
How do you build a home in Eau Claire County, step by step?
- Ask the Land Use Division to identify the parcel's zoning authority, mapped district and applicable overlays; town-specific county zoning adoption remains unconfirmed451.
- For private sewage or a private well, obtain the applicable sanitary or well approval; in most townships the sanitary permit precedes the building or land-use permit22123.
- Confirm the county building-permit requirements and the UDC issuing authority: contact a delegated municipality directly, or submit to DSPS through eSLA where municipal authority is absent128.
- Prepare the application, contractor license details, legible plans, REScheck, truss plans, water calculation, wall-bracing worksheet and application fee28.
What should you check before buying land in Eau Claire County?
Confirm the parcel's zoning authority, district and applicable overlays with the Land Use Division; the county GIS does not resolve town approval or ordinance applicability41. 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, about 79.8% of county land has slopes of 15% or less, but that countywide figure does not establish the parcel's buildability2631. If the parcel is near water, measure the 75-foot shoreland setback from the ordinary high-water mark before you site a structure10. 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 elevation32. If access runs to a state highway, plan for a WisDOT connection permit11. A typical home here carries an effective property tax rate near 1.4% and a median annual bill around $3,4613334, with a typical home insurance premium near $1,245 a year35. 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 allows36.
Watch-outs
- Eau Claire County's zoning map does not establish town approval or overlay applicability; ask the Land Use Division which ordinance governs your parcel41.
- 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 permit3.
- We could not confirm private-land RV or tiny-home occupancy rules in Eau Claire County; ask the Land Use Division and your township clerk before buying15.
Sources
- Eau Claire County Land Use Division (eauclairecounty.gov)
- UDC (Uniform Dwelling Code / One- and Two-Family Dwellings), quoted and re-checked
- Eau Claire County Health Department – Septic Systems (POWTS) Program (eauclairecounty.gov)
- Layer: Zoning (ID: 0), quoted and re-checked
- Layer: Zoning (ID: 0), quoted and re-checked
- Layer: Zoning (ID: 0), quoted and re-checked
- Wisconsin’s Uniform Dwelling Code, quoted and re-checked
- Private Onsite Wastewater Treatment Systems (POWTS), quoted and re-checked
- Wisconsin Maintenance Program (Wisconsin statewide rule), quoted and re-checked
- Wisconsin’s Shoreland Management Program (Wisconsin statewide rule), quoted and re-checked
- State highway connection permits (driveways & more) (Wisconsin statewide rule), quoted and re-checked
- dsps.wi.gov, quoted and re-checked
- UDC (Uniform Dwelling Code / One- and Two-Family Dwellings), quoted and re-checked
- UDC (Uniform Dwelling Code / One- and Two-Family Dwellings), quoted and re-checked
- UDC (Uniform Dwelling Code / One- and Two-Family Dwellings), quoted and re-checked
- Wisconsin’s Uniform Dwelling Code, quoted and re-checked
- Altoona: Altoona Municipal Code § 15.04.080 — Permit Required (Eau Claire County), quoted and re-checked
- Eau Claire County Health Department (Environmental Health) (eauclairecounty.gov)
- Altoona: Altoona Municipal Code § 13.36.090 — Private Sewage Disposal (Eau Claire County), quoted and re-checked
- BaseLayers/Zoning FeatureServer, quoted and re-checked
- Building Setback Requirements by Zoning District, quoted and re-checked
- dsps.wi.gov, quoted and re-checked
- Private Onsite Wastewater Treatment Systems (POWTS), quoted and re-checked
- Delegated Agents for Private On-Site Wastewater Treatment System (POWTS) Plan Review, quoted and re-checked
- Private Onsite Wastewater Treatment Systems (POWTS), quoted and re-checked
- Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
- UDC (Uniform Dwelling Code / One- and Two-Family Dwellings), quoted and re-checked
- UDC (Uniform Dwelling Code / One- and Two-Family Dwellings), quoted and re-checked
- Instructions for Submitting a UDC Permit Application, quoted and re-checked
- UDC (Uniform Dwelling Code / One- and Two-Family Dwellings), quoted and re-checked
- Share of land at 15% slope or less: Bolthole Index county data
- Floodplain Development Basics (Wisconsin statewide rule), quoted and re-checked
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
- Typical home insurance premium: Bolthole Index county data
- Lodging Establishments (Wisconsin statewide rule), quoted and re-checked
Written October 12, 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.