Grant County combines conservation, sanitation and zoning in a single department, and its zoning permit process carries a rule that decides whether some rural parcels can be built on at all: a land-locked parcel needs an easement at least sixty-six feet wide, or one that existed before the town adopted comprehensive zoning.
The department administers the county's comprehensive zoning ordinance, the sanitary permit process and shoreland and floodplain regulation, and reports annually to the state agriculture department on acreage rezoned out of the farmland preservation district.
This guide covers unincorporated Grant County. Platteville, Lancaster, Boscobel, Fennimore, Cuba City and Dickeyville permit their own construction; the towns issue building permits where they require them.
Access is a zoning question here. Before a zoning permit will issue on a land-locked parcel, the easement must be at least sixty-six feet wide, or must have existed before the town adopted comprehensive zoning. Separately, where a private road serves single-family dwellings, no zoning permits issue for additional dwellings until the private road has been converted.
What requires a building permit in Grant County?
Wisconsin splits construction into two statewide instruments, and neither one is a city invention. One- and two-family homes run on the Wisconsin Uniform Dwelling Code (SPS 320 to 325), a code Wisconsin wrote for itself — the state never adopted the International Residential Code, so IRC chapter references from other states simply do not apply here. Everything that is a public building or a place of employment, including any residential building of three or more units, runs on the Wisconsin Commercial Building Code (SPS 361 to 366), which moved to the 2021 I-codes effective September 1, 2025; plans submitted on or after November 1, 2025 must comply with the 2021 editions. Under Wis. Stat. 101.65(1c) and 101.02(7r)(a), Grant County may not enforce different technical standards — local ordinances must strictly conform to the state codes.
Typically permit required
- County zoning permits under the comprehensive zoning ordinance
- Sanitary permits through the department's sanitary permit process
- Shoreland zoning approvals — applying to all land within three hundred feet of a navigable waterway, measured from the ordinary high water mark
- Floodplain approvals, in zones defined by the federal flood mapping programme
- Farmland preservation rezoning where agricultural land is being converted
- The town building permit, where the town requires one
Often exempt
- Anything inside a city or village, which permits independently
- Projects the department confirms fall outside county permit requirements
- Buildings used for farming — exempt from the state code under Wis. Stat. 101.05(5), with farming defined by DSPS rule; a produce stand stays exempt only while the farmer raised substantially all of what it sells
- Primitive rural hunting cabins — carved out of municipal jurisdiction by Wis. Stat. 101.65(1g)
- Bed-and-breakfast establishments as defined by statute (Wis. Stat. 101.05(2))
What is actually local, and what is not
Building standards are statewide. Grant County's layer is agricultural and access-focused: the A-1 agricultural district covers predominantly rural land where soil or site characteristics limit use, farmland preservation rezoning is tracked and reported annually to the state, and easement width can be decisive on a rural lot.
Who handles permitting in Grant County?
Conservation, Sanitation and Zoning administers the county's zoning, sanitary and conservation programmes together, with a standing county board committee. The department publishes a zoning permit application process document to help applicants determine whether a permit is needed and which type. Towns issue building permits.
| Detail | Information |
|---|---|
| Department | Grant County Conservation, Sanitation and Zoning |
| County issues | Zoning permits, sanitary permits, shoreland and floodplain approvals |
| Land-locked parcels | Easement of at least sixty-six feet, or one predating town comprehensive zoning |
| Shoreland | All land within three hundred feet of a navigable waterway, measured from the ordinary high water mark |
| Farmland preservation | Rezoning out of the district reported annually to the state agriculture department |
| Building permits | Town |
Permit types
Residential permits
A rural house needs the county zoning permit, a sanitary permit where a private system is involved, and the town's building permit under the Uniform Dwelling Code with state Dwelling Contractor credentials. Access and easement questions should be settled first, since they can prevent the zoning permit entirely.
How Wisconsin contractor licensing works
Wisconsin has no state general contractor license for commercial work — the city's own forms note that 2013 Wisconsin Act 20 ended state building-contractor registration on July 2, 2013. For one- and two-family work the state requires a Dwelling Contractor certification on the business and a Dwelling Contractor Qualifier on an individual, and under Wis. Stat. 101.65(1m) Grant County may not issue a building permit to a contractor who cannot produce them; owner-occupants are exempt. Electricians and plumbers are licensed statewide by DSPS. HVAC contractors only register with the state — there is no state HVAC license — which is exactly where local rules step in. Grant County licenses no trades; state credentials govern and the town verifies them.
Commercial permits
Commercial development under the comprehensive zoning ordinance may require a conditional use permit, heard at public hearing by the county committee. Building code plan review routes to the state or a delegated municipality; the county holds no commercial plan review delegation.
Mechanical work, and where the state reviews directly
Commercial plan review in Wisconsin is a two-step: under Wis. Stat. 101.12(3)(h) the plan approval comes first and the local permit cannot issue without it. The state review trigger is 25,000 cubic feet, plus categorical triggers at any size for schools, high-hazard occupancies and residential buildings of three or more units. At 50,000 cubic feet plans must be prepared, signed and sealed by a Wisconsin-registered design professional, with a supervising professional retained for construction observation. Commercial plumbing plans go to review at sixteen or more fixtures. In the A-1 agricultural district, permanent non-residence structures carry their own siting requirements, and conversions out of farmland preservation are tracked at state level.
Grant County permit costs and fees
County fees follow the department's published schedule and accompany the zoning permit application, which must be signed and dated on the front page.
| Item | Fee or rule |
|---|---|
| Zoning permit | Per the department schedule, submitted with the completed application |
| Sanitary permit | Through the department's sanitary permit process |
| Shoreland or floodplain application | Where the parcel falls in either zone |
| Town building permit | Set by the town where required |
Vertical distance does not matter for shoreland. Shoreland zoning applies to all land within three hundred feet of a navigable waterway, measured from the ordinary high water mark — and the county notes expressly that vertical distance has no implication for whether a parcel is in or out of the shoreland zone.
Trade permits and who may pull them
Trades are state-credentialed and permitted at town level; the county handles zoning, sanitary and conservation.
Permit required
- Electrical, plumbing and HVAC — state credentials; town permits
- Private onsite wastewater systems — county sanitary permit
- Shoreland or floodplain work — county application, determined by the department
- One- and two-family general work — state Dwelling Contractor plus Qualifier
Typically exempt
- Work inside cities and villages
- Projects the department confirms need no county permit
How to apply for a Grant County building permit
Land-locked parcels need a sixty-six foot easement or one predating town zoning.
It will determine whether the parcel is in either zone.
Additional dwellings on a private road serving single-family homes require conversion first.
Signed and dated on the front page, with fees.
Through the same department.
Where the town requires one.
Review, corrections and what actually causes delay
Grant County's decisive questions are asked before any drawing matters: does the parcel have legal access of sufficient width, and is it inside the shoreland belt. Both are answered by the department, and both can stop a project outright.
Inspections in Grant County
Building inspections are the town's where the town requires a permit. County activity covers zoning compliance, sanitary systems and conservation programmes.
Grant County permit search and official resources
- Grant County Conservation, Sanitation and Zoning — the zoning permit application process and department programmes
- Grant County Comprehensive Zoning Ordinance — districts, farmland preservation and permit provisions
- DSPS plan review — state triggers and delegated authority lists
- Wisconsin Uniform Dwelling Code — SPS 320 to 325 as published
Frequently asked questions
Does Grant County issue building permits?
No. The county issues zoning and sanitary permits and administers shoreland and floodplain; the town issues the building permit where it requires one.
Can I build on a land-locked parcel?
Only where the easement is at least sixty-six feet wide, or where an easement existed before the town adopted comprehensive zoning.
How far does shoreland zoning reach?
Three hundred feet from a navigable waterway, measured from the ordinary high water mark — and vertical distance has no bearing on whether you are in the zone.
Can I add a second house on a private road?
Not until the private road has been converted, where the road serves single-family dwellings.
What is the A-1 district?
The agricultural district covering predominantly rural land where soil or site characteristics limit use, with conservative permitted activities and siting rules for non-residence structures.
Who tracks farmland preservation rezoning?
The county reports annually to the state agriculture department on acreage rezoned out of the farmland preservation district.
Simplify Grant County permitting with Alliance Permitting
Grant County's access and shoreland rules decide feasibility before anything else. We get those answers from the department first, then run the zoning and sanitary permits and the town's building permit in order.
Ready to break ground in Grant County sooner?
Send us the scope and the parcel. We confirm the review path with the Grant County Conservation, Sanitation and Zoning Department, assemble the submittal, file it, and track it through issuance — corrections included.
More Wisconsin permitting guides
More Wisconsin permitting guides
This guide is provided by Alliance Permitting for general information about Grant County permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.