Building permits, zoning and septic rules in Marquette County, Wisconsin

At a glance

Building permit

Required for new one- and two-family homes, including manufactured-home installations¹

Zoning

County general zoning applies in townships that adopted it; Shields and Springfield are unzoned except within shoreland boundaries³

Septic permit

A separate county permit is required for each POWTS or non-plumbing sanitation system⁵

Owner-builder

An owner-occupant may apply without Dwelling Contractor Certification, but permits and inspections still apply⁶

RV living

Seasonal camping is conditional; year-round use requires additional approval and cannot serve as a permanent residence⁷⁸

Minimum dwelling size

County-zoned dwellings require at least 400 square feet of year-round living area and a 20-foot width⁹

Minimum lot size

Varies by zoning district; confirm the parcel's district before purchase or division¹⁰

Private well

Wisconsin requires advance DNR notification for most new private wells¹¹

Who to call

Contact details are copied from each office’s official page and were checked against it on October 9, 2026.

Do you need a building permit in Marquette County, Wisconsin?

Yes. A UDC building permit is required for every new one- or two-family dwelling, including stick-built, modular and manufactured-home installations¹. Wisconsin's Uniform Dwelling Code governs these homes statewide, but Marquette County's Building and Mechanical Code does not cover the Town of Springfield, the villages of Endeavor, Neshkoro and Oxford, or the City of Montello². Ask Planning, Zoning & Land Information to identify the correct issuing authority before filing¹². An owner who occupies or will occupy the dwelling may apply without Dwelling Contractor Certification by completing the owner-occupant attestation, but that allowance does not waive building permits, trade requirements or inspections⁶. Starting work before obtaining the building permit doubles the applicable inspection fees¹³.

Who issues Marquette County building permits, and how do you reach them?

Start with the Marquette County Planning, Zoning & Land Information Department at 77 West Park Street, Room 104, Montello, WI 53949-9366; call 608.297.3036 or email permits@marquettecountywi.gov¹². New homes use the Wisconsin UDC application, while other projects use the county General Building Permit Application; when a sanitary permit is required, it must come before the zoning permit¹⁴. UDC applications require contractor credentials and legible dimensioned plans¹⁵. The published residential schedule runs through December 2026 and lists a $94 plan-review fee per new unit, a building fee of $0.33 per square foot with an $847 minimum, and a $94 occupancy-certificate fee per new unit¹³. That fee listing does not by itself confirm that every municipality requires an occupancy certificate, so ask the issuing authority what document is needed before move-in¹⁶.

Does Marquette County, Wisconsin have zoning?

Marquette County general zoning is administered in the townships that have adopted it, including Buffalo, Crystal Lake, Douglas, Harris, Mecan, Montello, Moundville, Neshkoro, Newton, Oxford, Packwaukee and Westfield³. Shields and Springfield are unzoned for county general zoning, though county shoreland zoning still applies there within shoreland boundaries; whether either town has its own zoning ordinance is unconfirmed, so ask the town clerk³. County zoning maps and district standards are published, but incorporated municipalities may administer their own zoning¹⁷¹⁸. In county-zoned areas, a dwelling needs at least 400 square feet of year-round living area and a minimum width of 20 feet⁹. Lot minimums vary sharply by district: examples range from 2 acres in AG-3(2) to 40 acres in AG-1, while R-1 requires 30,000 square feet¹⁰. Road setbacks also vary by highway class, and the usual shoreline setback is 75 feet from the ordinary high-water mark or wetland boundary, subject to exceptions¹⁹. Confirm the parcel's district, local jurisdiction, setbacks and allowed use with Planning & Zoning before designing a home¹².

How do septic permits work in Marquette County?

Marquette County Planning, Zoning & Land Information administers private septic and POWTS rules wherever municipal sewer is unavailable, including in towns that run their own zoning or building permits⁴. Every POWTS or non-plumbing sanitation system needs its own county application and permit before installation, enlargement, alteration, reconnection or construction of a structure that needs the system⁵. The application includes a soil and site evaluation and applicable fees²⁰. Septic feasibility deserves attention before purchase because only 0.7% of county soils are rated without severe limitations for a conventional drain field²¹. A newly installed, modified or reconnected POWTS must remain open for county inspection and acceptance²². Off-grid does not mean permit-free: a non-plumbing system is limited to a structure with no indoor plumbing, and adding plumbing requires a POWTS before water service is connected²³.

Can you live in an RV or tiny home on land in Marquette County?

In areas under county general zoning, RV camping on a vacant lot is seasonal from April 15 through December 1, requires sanitation and waste disposal, and is prohibited in the Residential R-1 district⁷⁸. A camping unit cannot be occupied by someone with no other regular residence⁸. Year-round use requires a conditional-use permit, at least 5 acres outside a platted subdivision, Town Board approval, annual inspection and other conditions⁸. Camping while a permitted dwelling is under construction is limited to one year after the zoning or residential building permit issues⁸. Marquette County does not define a separate tiny-home occupancy path in the available rules; a dwelling in county-zoned areas must still meet the 400-square-foot living-area and 20-foot-width minimums⁹. Single-wide manufactured homes are generally limited to licensed manufactured-home parks, except approved replacement of an existing single-wide²⁴.

Building a home in Marquette County: the steps, in order

1. Ask Planning & Zoning which building authority and zoning jurisdiction cover the address, especially in Shields, Springfield or an incorporated municipality²¹⁸¹².

1. Confirm the zoning district, lot size, road and shoreline setbacks, and any mapped floodplain limits before final design¹⁰¹⁹²⁵.

1. Complete the soil and site evaluation and obtain the sanitary permit before the zoning permit when private wastewater service is needed²⁰¹⁴.

1. Secure driveway approval from the Highway Department for a county highway, town officials for a town road, or WisDOT for a state highway²⁶²⁷.

1. File the correct application, plans and fees, and do not begin work before issuance¹⁴¹³.

1. Notify the inspector for footing, foundation, rough, insulation and final inspections, then confirm what occupancy approval the issuing authority requires²⁸¹⁶.

What should you check before buying land in Marquette County?

Put septic feasibility near the top of the due-diligence list because only 0.7% of county soils are rated without severe limitations for a conventional drain field²¹. Check the county zoning map and verify the district with Planning & Zoning because lot size, setbacks and allowed uses depend on the parcel's location¹⁷¹⁰¹². A land division subject to Chapter 69 generally needs at least 30,000 square feet, a 100-foot average width and qualifying street access, with county review and soil, floodplain or wetland information as applicable²⁹. Development in a mapped floodplain requires county review and may need added delineation before a sanitary permit²⁵. Confirm driveway approval with the authority maintaining the road²⁷²⁶. For a new private well, obtain the Wisconsin DNR notification number before construction; we could not confirm an additional Marquette County well permit³⁰.

Watch-outs

• Shields and Springfield are outside county general zoning, but county shoreland rules still apply within shoreland boundaries; ask the town and county which rules control the parcel³¹.
• A non-plumbing sanitation permit is not permission to add water later; a POWTS must be installed before water service is connected³².
• A Marquette County short-term rental needs county licensing, and an unsewered property's septic design may limit guest occupancy³³.

Sources

1. UDC (Uniform Dwelling Code / One- and Two-Family Dwellings) - DSPS, quoted and re-checked
2. Residential Dwelling Permitting - Marquette County Wisconsin, quoted and re-checked
3. Planning and Zoning - Marquette County Wisconsin, quoted and re-checked
4. Building Requirements - Marquette County Wisconsin, quoted and re-checked
5. Chapter 74 - Private On-Site Wastewater Treatment System, quoted and re-checked
6. Instructions for Submitting a UDC Permit Application - DSPS, quoted and re-checked
7. Building Requirements - Marquette County Wisconsin, quoted and re-checked
8. marquettecountywi.gov, quoted and re-checked
9. Building Requirements - zoning district table and land-use requirements, quoted and re-checked
10. marquettecountywi.gov, quoted and re-checked
11. Well and heat exchange notification (Wisconsin statewide rule), quoted and re-checked
12. Marquette County Planning, Zoning & Land Information Department (marquettecountywi.gov)
13. Marquette County Building Inspection Fee Schedule, quoted and re-checked
14. Residential Dwelling Permitting - Marquette County Wisconsin, quoted and re-checked
15. UDC (Uniform Dwelling Code / One- and Two-Family Dwellings) - DSPS, quoted and re-checked
16. Marquette County Building Inspection Fee Schedule, quoted and re-checked
17. Building Requirements - Marquette County Wisconsin, quoted and re-checked
18. Planning & Zoning - Marquette County Wisconsin, quoted and re-checked
19. Chapter 70 Zoning, quoted and re-checked
20. Chapter 74 Private On-Site Wastewater Treatment System, quoted and re-checked
21. 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
22. Chapter 74 POWTS inspection provisions, quoted and re-checked
23. Chapter 74 Private On-Site Wastewater Treatment System, quoted and re-checked
24. Building Requirements - zoning district table and land-use requirements, quoted and re-checked
25. Building Requirements - Marquette County Wisconsin, quoted and re-checked
26. Marquette County Highway Department (marquettecountywi.gov)
27. marquettecountywi.gov, quoted and re-checked
28. UDC (Uniform Dwelling Code / One- and Two-Family Dwellings) - DSPS, quoted and re-checked
29. Chapter 69 - Subdivision, quoted and re-checked
30. Well and heat exchange notification (Wisconsin statewide rule), quoted and re-checked
31. Planning and Zoning - Marquette County Wisconsin, quoted and re-checked
32. Chapter 74 - Private On-Site Wastewater Treatment System, quoted and re-checked
33. Short-Term Rentals Licensing - Marquette County Wisconsin, quoted and re-checked

Written October 9, 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.