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

Yes. Ashland County requires a building permit before construction for a structure used, intended or designed for permanent or temporary human habitation or occupancy¹. Garages, pole barns and sheds also need an accessory-building permit, and starting first can double the county fee¹. The county fee schedule dated 4/10/2026 lists $500 for a dwelling permit and $100 for an RV placement permit⁸.

A new one- or two-family home is also governed by Wisconsin's statewide Uniform Dwelling Code, including covered additions and alterations⁵. Construction should begin only after plans are approved and the building permit is issued and posted⁵. An owner who currently occupies or will occupy the home may take out the construction and erosion-control permits, but that owner-builder route does not waive zoning, sanitary or other approvals⁵.

The Ashland County Zoning Administration is the first county stop for building, land-use, sanitary and floodplain questions². The office is in the Ashland County Courthouse at 201 Main St W, Room 109, Ashland, Wisconsin, and its phone number is 715-682-7014².

Ashland County accepts online applications through Catalis for accessory buildings, dwellings and shoreland grading; the portal requires an account². The county also accepts payment online by credit card, in person or by mail². Ask the office which Uniform Dwelling Code inspector serves the parcel, because the county building page directs dwelling applicants to the local inspector for permit information¹. Also contact the town chair or clerk because a town, village, city or the state may require additional permits².

Ashland County has general zoning in the towns of Agenda, Ashland, Butternut, Gingles, Gordon, Jacobs, LaPointe, Marengo, Morse, Peeksville, Sanborn, Shanagolden and White River, outside incorporated cities and villages². Cities and villages administer their own zoning, and the Town of La Pointe requires separate local review where applicable².

Use the county Zoning Web Map to identify a parcel's mapped district, then confirm jurisdiction with the county and the town before relying on the map⁹. In the county's Forestry and Recreation and Unrestricted districts, covered structures must keep at least 10 feet from the front, rear and each side lot line⁴. In shoreland areas, the county's Shoreland Protection Ordinance requires buildings to sit 75 feet from the ordinary high-water mark of navigable water unless an exemption or setback averaging applies¹⁰. In unsewered shoreland areas, the Shoreland Protection Ordinance sets a minimum lot area of 20,000 square feet and a minimum average width of 100 feet; sewered shoreland lots need 10,000 square feet and 65 feet¹¹. Residential lots governed by the county subdivision ordinance have frontage, width and area standards that differ depending on public sewer service, and adverse soils or topography can require a larger lot⁶. We could not confirm a general countywide minimum dwelling size, lot-coverage limit or non-shoreland height limit; ask the Zoning Administration and the parcel's town or municipality².

Ashland County Zoning Administration issues sanitary permits and has agent status for plan review of holding tanks and conventional systems, while mound and at-grade systems, pressurized in-ground systems and holding tanks over 3000 gallons per day go to Wisconsin DSPS³. A certified soil tester must test the site for systems other than a holding tank, and a licensed master plumber must install the sanitary system².

For a new dwelling using private onsite wastewater treatment, the sanitary permit must be issued before the building permit⁵. Site feasibility deserves early attention: only 0.3% of mapped soils avoid a severe USDA limitation rating for a conventional septic drain field¹². That rating does not decide whether a parcel can support a system, but it makes the soil evaluation an important contingency before purchase. Privately owned septic systems must be visually inspected at least once every three years under Wisconsin's maintenance program¹³.

In the area governed by Ashland County's ordinance, an RV outside an approved state or county park may stay on an undeveloped parcel for up to 21 consecutive days without triggering the longer-placement rule⁴. For more than 21 consecutive days, obtain an RV Placement Permit and sanitary permit before placement, provide an approved pit privy or other compliant waste system, and meet the applicable district dimensions and setbacks⁴. Each additional RV requires another 20,000 square feet⁴. The rule excludes incorporated cities and villages, the Bad River Indian Reservation and the Town of La Pointe⁴.

The Forestry and Recreation District permits campgrounds and seasonal recreational camps, but it prohibits family dwellings; do not treat a camping use there as permission for a permanent home⁴. Tiny homes depend on the zoning district. In the county's Forestry and Recreation District, family dwellings are prohibited, and the ordinance defines a family dwelling as any building occupied as a legal residence, so a tiny home used as a residence there is not allowed⁴. The Unrestricted District allows any land use not in conflict with law, so a tiny home can serve as a dwelling there if it meets sanitary, building-code and setback requirements and has the required building permit⁴. The ordinance never uses the words tiny home, so ask the Zoning Administration which district covers your parcel². We could not confirm a numeric minimum dwelling size².

1. Identify the parcel's jurisdiction and zoning district with the county map, then confirm the result with Ashland County Zoning Administration and the town or municipality^2,9.
2. If the project involves dividing land, confirm the county subdivision process before relying on proposed lot lines; covered land divisions must comply with the subdivision ordinance⁶.
3. Determine septic feasibility and obtain the sanitary permit before the building permit if the home will use a private onsite wastewater system⁵.
4. Confirm well requirements; Wisconsin generally requires a Well Construction Notification Number before a new private well is constructed⁷.
5. Apply for the county building permit and the applicable Uniform Dwelling Code permit before construction¹.
6. Secure driveway approval from the road authority; access onto a County Trunk Highway requires a county permit, while a state-highway connection requires WisDOT approval^14,15.
7. Request required inspections before each construction phase is covered, and complete the final inspection before occupancy⁵.

Confirm zoning jurisdiction, mapped district and any town-level rules before making the purchase unconditional². If the seller plans to split the tract, verify that the division complies with Ashland County's subdivision ordinance rather than assuming the proposed parcel is buildable⁶. Check whether the proposed lot satisfies the county subdivision standards and can accommodate compliant water and wastewater systems; larger lots may be required where soils or topography are adverse⁶.

Order septic soils work early because only 0.3% of mapped soils avoid a severe limitation rating for conventional drain fields¹². Review flood mapping because development within regulated Ashland County floodplain areas must comply with the floodplain ordinance¹⁶. If the parcel touches a County Trunk Highway, budget 3 to 4 weeks for driveway inspection and response and a $25 permit charge¹⁴. For carrying costs, the county's median property-tax bill is $2,354 per year and the effective property-tax rate is 1.5%¹².