Dunn County, WI Building Permits, Zoning & Septic Rules

Dunn County, Wisconsin requires a building permit before construction of a new home, with a state-certified township inspector administering the dwelling code and the county handling zoning approval¹². Dunn County zoning covers most unincorporated towns, but six towns are outside the county's comprehensive zoning ordinance³. A home using a private septic system needs its sanitary permit before the county will issue the zoning permit⁴.

At a glance

Building permit: Required before constructing a new one- or two-family home¹
Building department: The state-certified UDC inspector for the parcel's township⁵²
Zoning: County zoning applies in most unincorporated towns, with six named exceptions³
Septic permit: Required before a county zoning permit for a building served by private septic⁴
Owner-builder: An owner-occupant may obtain the construction and erosion-control permits⁶
RV or tiny-home living: No countywide occupancy rule was confirmed; ask Planning & Land Use and the town⁷⁸
Septic soils: Only about 3.4% of soils rate free of severe limits for a conventional drain field⁹
Shoreland setback: Generally at least 75 feet from the ordinary high water mark¹⁰

Who to call

Building permits

Township UDC Building Inspector

State Uniform Dwelling Code building permits and inspections for the applicable Dunn County township

Planning & zoning

Dunn County Planning & Land Use (Zoning) Division

Zoning permits, land-use questions, setbacks and parcel zoning in Dunn County

(715) 231-6520

[email protected]

3001 US Hwy 12 East, Suite 240A, Menomonie, WI 54751

Septic permits

Dunn County Planning & Land Use — Sanitation

Sanitary permit applications and POWTS maintenance records

715-231-6520

[email protected]

Floodplain permits

Dunn County Planning & Land Use (Zoning) Division

Shoreland and floodplain land-use questions

(715) 231-6520

[email protected]

3001 US Hwy 12 East, Suite 240A, Menomonie, WI 54751

Roads & driveways

Dunn County Highway Division

Driveway access applications for county highways and county utility permits

(715) 232-2181

[email protected]

3303 US Highway 12 East, Menomonie, WI 54751

Contact details are copied from each office’s official page and were checked against it on September 27, 2026.

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

Yes. A new one- or two-family home in Dunn County needs a building permit under Wisconsin's Uniform Dwelling Code before construction begins¹. The UDC is the statewide code for one- and two-family dwellings built since June 1, 1980¹¹. Dunn County directs applicants to the state-certified UDC building inspector serving the parcel's township, rather than presenting the county zoning office as the residential building department⁵². Alteration and addition requirements can vary by municipality, and zoning, sanitary, well, floodplain, driveway and utility approvals may also be required¹. An owner who occupies or will occupy the finished home may take out the construction and erosion-control permits without the contractor-certification arrangement required of a dwelling contractor; that allowance does not eliminate the permits⁶.

Who handles Dunn County building permits, and how do you reach them?

The residential building-permit contact is the UDC building inspector assigned to the township where the parcel lies; Dunn County's zoning page publishes the inspector list and tells applicants to contact that inspector before construction². Dunn County Planning & Land Use is the separate county office for zoning and land-use approval, at 3001 US Hwy 12 East, Suite 240A, Menomonie, and can be reached at (715) 231-6520 or [email protected]⁸. The county says most development projects need a zoning permit and that an application may require site plans, building plans and other project documents⁸. During home construction, inspections occur before each phase is covered; after the work is ready and an inspection is requested, the inspector has two business days before the work may be covered¹². Occupancy follows a final inspection with no major health or safety violations¹³.

Does Dunn County, Wisconsin have zoning?

Dunn County has comprehensive zoning, but it does not apply uniformly to every town. Chapter 13 applies in unincorporated Dunn County except the towns of Eau Galle, Elk Mound, New Haven, Rock Creek, Sand Creek and Springbrook; cities and villages administer their own zoning codes³. Those six town exceptions do not remove every county land rule: Dunn County's shoreland, floodplain, land-division and sanitary ordinances apply in all towns³. For a parcel outside Chapter 13, ask the town whether it has its own zoning because Wisconsin towns outside county zoning may be locally zoned or unzoned³¹⁴. Near navigable water, buildings are generally set back at least 75 feet from the ordinary high water mark, subject to listed exceptions and setback averaging¹⁰. Dunn County Planning & Land Use can identify the parcel's district and applicable setback before you design the site plan⁸.

How do septic permits work in Dunn County?

Dunn County requires a sanitary permit before issuing the zoning permit for a building served by a private onsite wastewater system⁴. The process starts with a soil test filed with the county; a plumber or designer then prepares the system plans using the soil results and planned bedroom count, and the system is inspected before backfilling¹⁵. Dunn County reviews conventional systems and holding tanks under 3,000 gallons, while mound systems, at-grade systems, industrial holding tanks and tanks over 3,000 gallons go to the state for plan review; the county still issues the permit and performs the inspection¹⁶. Site feasibility deserves early attention because only about 3.4% of Dunn County soils are rated free of severe limitations for a conventional drain field⁹. Wisconsin also requires private wastewater systems to receive a visual inspection at least once every three years, with counties tracking maintenance¹⁷.

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

We could not confirm a single countywide rule for living in an RV or occupying a tiny home on private land in Dunn County. The answer can change with the parcel's jurisdiction because Chapter 13 county zoning excludes six towns, incorporated cities and villages use their own codes, and a town outside county zoning may apply its own ordinance³⁷¹⁴. Ask Dunn County Planning & Land Use for the parcel's county zoning status, then ask the town or municipality about RV occupancy, temporary camping, tiny-home use and minimum dwelling size before purchase⁸. A manufactured home installed as a new dwelling is recognized under Wisconsin's Uniform Dwelling Code, but local zoning and sanitary requirements still apply¹⁸. State-park campsite rules do not answer whether an owner may live in an RV on private Dunn County land¹⁹.

What are the steps to build a home in Dunn County?

Ask Dunn County Planning & Land Use whether Chapter 13, shoreland or floodplain rules cover the parcel, and get the applicable zoning district and setbacks³⁸.
Confirm access approval with the authority maintaining the road; a state-highway driveway needs a WisDOT connection permit²⁰.
Hire a certified soil tester and have the soil test filed before finalizing the house and septic locations¹⁵.
Have the plumber or designer prepare the onsite wastewater plans, then obtain the sanitary permit before seeking the county zoning permit⁴¹⁵.
Submit the site plan and other required project documents to Dunn County Planning & Land Use for zoning review⁸.
Apply to the township's UDC inspector and wait for the building permit before construction¹².
Call for inspections before covering each construction phase and pass the final inspection before occupancy¹²¹³.

What should you check before buying land in Dunn County?

Start with jurisdiction and soils. Confirm whether the parcel is in a town covered by Dunn County Chapter 13, one of the six excepted towns, or an incorporated municipality with its own zoning³. Get septic feasibility evaluated before relying on a house site: only about 3.4% of Dunn County soils rate free of severe limits for a conventional drain field⁹. Check mapped shoreland and floodplain constraints with Planning & Land Use because those county ordinances apply in every town, including towns outside comprehensive zoning³²¹. Verify road access with the maintaining authority; Dunn County Highway publishes a driveway access application for county highways, while state-highway connections require WisDOT approval²²²⁰. For carrying costs, the median property-tax bill is about $3,325 per year at an effective rate near 1.5%, and the typical home-insurance premium is about $1,303 per year²³²⁴²⁵.

Watch-outs

Dunn County's comprehensive zoning ordinance excludes six towns, but shoreland, floodplain, land-division and sanitary ordinances still apply throughout every town³.
A private septic system's sanitary permit comes before the county zoning permit, so settle the soil test and system design early⁴¹⁵.
We could not confirm a countywide RV-occupancy, tiny-home-occupancy or minimum-home-size rule; ask Planning & Land Use and the parcel's town before buying⁷⁸.

Sources

Written September 27, 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.

How Dunn County scores

Seclusion37100% ev.

Self-Sufficiency66100% ev.

Admin Boringness44100% ev.

Durability72100% ev.

Property Autonomy70100% ev.

Carry Cost66100% ev.

Evidence strength: 100%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$318kTypical home

1.5%Property tax

$4,904Land / acre

34"Annual rain

5.3% of yrsSevere drought

2.1 / yr (+2)Mid-century 100°F days

13.9 daysMid-century dry spell

1.75" (+8.5%)Mid-century 1-day rain

1.73×Wildfire change factor

100%Forward climate coverage

$1,303Home insurance / yr

2.4% / yrInsurance growth

0.65%Nonrenewal rate

county median (2+ published ZIPs)Insurance basis

82,217People within 30 min

4,367,240People within 2 hr

41,150Radius comparison (15 mi)

53.9People / sq mi

0.4%Federal land

75.5%Land at 15% slope or less

3.4%Septic soil without severe limits

17,478 acWorkable land screen

39.7%Wooded land

41.8 tonsBiomass / forest ac

44.1°FAvg temp

Answers from the rulebook for Dunn County

What the ordinances and state agencies actually say — one answer per question, each quoted from the official source and independently re-checked.

Dunn County rules

County-wide zoningPresent (with conditions)
Dunn County Chapter 13 Comprehensive Zoning applies in unincorporated areas and towns subject to town approval, not incorporated cities and villages.
- The ordinance applies to all towns and unincorporated areas except Eau Galle, Elk Mound, New Haven, Rock Creek, Sand Creek, and Springbrook.
- Incorporated cities and villages enforce their own zoning codes.
- Shoreland, floodplain, land division, and sanitary ordinances apply to all towns in Dunn County.
“Dunn County's Chapter 13 Comprehensive Zoning ordinance applies to all towns and unincorporated areas, except the towns of Eau Galle, Elk Mound, New Haven, Rock Creek, Sand Creek, and Springbrook.”
Zoning - Dunn County, WI ↗Re-checked Sep 25, 2026
Local zoningVaries (with conditions)
County aggregate of zoning administration across unincorporated areas, towns, cities, and villages.
- County Chapter 13 applies in specified towns and unincorporated areas.
- Six named towns are excepted from Chapter 13.
- Incorporated cities and villages implement and enforce their own zoning codes.
“Incorporated areas (cities and villages), such as the city of Menomonie and the villages of Boyceville, Colfax, Downing, Elk Mound, Knapp, Ridgeland, and Wheeler, implement and enforce their own zoning codes.”
Zoning - Dunn County, WI ↗Re-checked Sep 25, 2026
Zoning districtsPublished (with conditions)
County zoning districts under Chapter 13.
- The ordinance states that thirteen districts exist and that their locations are shown on official zoning maps available from the Zoning Administrator's Office.
- Municipal zoning districts are administered by the relevant city or village.
county zoning districts: 13 districts
“General Zoning Maps: The boundaries of the general zoning districts established in Section 13.2.1 of this ordinance are shown on the maps entitled "Zoning Maps of Dunn County". These maps on file in the office of the County Zoning Administrator are the official version and shall control in any cases where differences occur between it and other copies.”
Chapter 13 Comprehensive Zoning Ordinance ↗Re-checked Sep 25, 2026
Who permits septicMixed (with conditions)
Private onsite wastewater treatment systems in Dunn County.
- The county reviews and issues plans for conventional systems and holding tanks under 3,000 gallons.
- Mounds, at-grades, and industrial holding tanks or tanks over 3,000 gallons are sent to state offices for review and approval.
- The county issues the permit and performs inspection after approval.
holding tank threshold: < 3000 gallons (Industrial holding tanks and systems over 3,000 gallons are sent to state offices.)
“Plans for Conventional and holding tanks less than 3000 gals are reviewed and issued by the County. Plans for Mounds, At-Grades, and Industrial Holding Tanks (or over 3,000 gal) are sent by the plumber to the State offices for review and approval.”
The Sanitary Permit Process ↗Re-checked Sep 25, 2026
Septic permitRequired
A building in Dunn County serviced by a private onsite wastewater treatment system.
- A sanitary permit must be applied for and issued before the county issues a zoning permit for the building.
- A soil test and system plans are required as described in the county process.
- Plan review authority varies by POWTS type and tank size.
“Prior to issuing a zoning permit for a building to be serviced by a private on-site wastewater system (POWTS), a sanitary permit must be applied for and issued.”
The Sanitary Permit Process ↗Re-checked Sep 25, 2026
Subdividing landRegulated (with conditions)
Division of land in unincorporated Dunn County.
- Chapter 16 and related Wisconsin Administrative Code and statutes apply.
- A minor land division creating a parcel less than a rectangular half of a government protracted quarter-quarter requires county approval and a certified survey map.
- A major land division of five or more lots requires a subdivision plat.
- All CSMs and preliminary and final plats are reviewed by the county before recording.
- Required applications and fees accompany submissions.
major subdivision threshold: >= 5 lots (Subdivisions with five or more lots under 1.5 acres require state plat review and county approval.)
“Major Land Division - Land divisions of five (5) or more lots shall be recorded as a Subdivision Plat. Any subdivision with five or more lots that are less than 1.5 acres in size requires State plat review and County approval.”
Land Division Review - Dunn County, WI ↗Re-checked Sep 25, 2026
Permit processPublished (with conditions)
County sanitary permitting for POWTS in Dunn County.
- A soil tester files a soil test with the county.
- The plumber or designer prepares plans based on soil results and bedroom count.
- The county or state reviews plans depending on system type and tank size.
- The county performs an inspection before backfilling and prepares an as-built report.
“The plumber or designer draws up the plans for the proposed POWTS, based on the system chosen and the number of bedrooms planned for the house”
The Sanitary Permit Process ↗Re-checked Sep 25, 2026

Wisconsin rules that apply here

Building permitRequired
New one- and two-family dwellings covered by Wisconsin’s Uniform Dwelling Code, including covered additions and alterations.
- The cited brochure states that permit requirements for alterations and additions vary by municipality.
- Construction begins only after plans are approved and the building permit is issued and posted.
- The enforcing jurisdiction may be the municipality, county, or state.
- Local zoning, land-use, floodplain, sanitary, well, driveway, utility, and other approvals may also be required.
- A building permit cannot be issued for a new dwelling using a private onsite wastewater treatment system until a sanitary permit has been issued.
“Begin construction after plans are approved and building permit is issued and posted.”
Wisconsin’s Uniform Dwelling Code ↗Re-checked Sep 21, 2026
One more reviewed finding on this topic
- Required — New one- and two-family dwelling construction in Dunn County under the Wisconsin UDC.
  “Begin construction after plans are approved and building permit is issued and posted.”
  Wisconsin’s Uniform Dwelling Code ↗Re-checked Sep 25, 2026
Owner-builder exemptionConditional
An owner obtaining construction and erosion-control permits for a dwelling covered by the Wisconsin Uniform Dwelling Code.
- The owner must occupy the home currently or will occupy it after completion.
- The exemption permits the owner to take out the construction and erosion-control permits without the state-certified Dwelling Contractor and Dwelling Contractor Qualifier arrangement described for contractors.
- The owner-occupancy statement must be checked on the permit application if the applicant does not possess Dwelling Contractor certification.
- The source describes an owner-occupancy condition; it does not establish a general exemption for non-occupant owners.
“The construction and erosion control permits must be taken out by a state-certified Dwelling Contractor, who also employs a state-certified Dwelling Contractor Qualifier, or by the owner who occupies the home currently or will after completion.”
Wisconsin’s Uniform Dwelling Code ↗Re-checked Sep 21, 2026
Building code adoptedAdopted (with conditions)
Public buildings, places of employment, and multifamily buildings subject to Wisconsin's commercial building code.
- The Division of Industry Services reviews plans before construction for compliance with state statutes and building codes.
- Local certified municipalities may provide plan review and inspection services for certain building types.
- The Wisconsin Commercial Building Code adopted the 2021 ICC effective September 1, 2025; plans submitted November 1, 2025 or later must comply with the updated code.
- Municipalities may have grandfathered fire detection, prevention, and suppression ordinances under 2013 Act 270.
2021 ICC adoption date: September 1, 2025 (The deadline for building plan compliance was delayed.) · updated-code plan-submission deadline: November 1, 2025 (Plans submitted on or after this date must comply with the updated Commercial Building Code.)
“2013 Act 270 establishes a uniform commercial building code in Wisconsin while allowing municipalities to grandfather fire detection, prevention, and suppression ordinances”
Commercial Buildings ↗Re-checked Sep 21, 2026
One more reviewed finding on this topic
- Adopted (with conditions) — New one- and two-family dwellings in Wisconsin built since June 1, 1980.
  “The Uniform Dwelling Code (UDC) is the statewide building code for one- and two-family dwellings built since June 1, 1980.”
  One- & Two-Family (Uniform Dwelling Code) ↗Re-checked Sep 21, 2026
InspectionsRequired
Each phase of construction of a one- or two-family dwelling governed by the Wisconsin Uniform Dwelling Code.
- Inspections are called for before each phase is covered up.
- The local inspector’s instructions apply.
- The inspector has two business days after the inspection request and the work being ready to inspect before the work may be covered.
- Inspections check compliance with the code and may also check compliance with approved plans.
- The UDC is enforced by municipal or county building inspection departments or the Wisconsin Division of Industry Services.
inspection response period: 2 business days (After the inspection request and the work is ready to inspect, before the work may be covered up.)
“Call for inspections of each phase of construction prior to covering it up - check the local inspector’s instructions. The inspector has two business days after the date that you make the inspection request and the work is ready to inspect, before you may cover up the work. Inspectors will check for compliance with the code.”
Wisconsin’s Uniform Dwelling Code ↗Re-checked Sep 21, 2026
Certificate of occupancyLimited
Occupancy of a dwelling governed by Wisconsin’s Uniform Dwelling Code after construction.
- Occupancy follows a final inspection in which no major health or safety violations are found.
- Some municipalities will issue occupancy permits; the state source does not state that every municipality must issue a certificate or occupancy permit.
- The dwelling exterior must be completed within two years after permit issuance.
exterior completion deadline: 2 years after permit issuance
“Take occupancy after receiving a final inspection in which no major health or safety violations are found. (Some municipalities will issue occupancy permits.) Also, the dwelling’s exterior must be completed within two years after permit issuance.”
Wisconsin’s Uniform Dwelling Code ↗Re-checked Sep 21, 2026
SetbacksSpecified
Buildings and structures in unincorporated Wisconsin shoreland zoning areas measured from the ordinary high water mark.
- The standard applies in the shoreland zone and is implemented through county shoreland zoning ordinances.
- Exceptions include piers, boat-hoists, fishing rafts, utilities, walkways, stairways or rail systems, decks or gazebos complying with s. 59.692(1v), and boathouses.
- If an existing pattern of development exists, counties may allow new homes closer than 75 feet through setback averaging.
- Counties may adopt additional requirements.
minimum setback from ordinary high water mark: >= 75 feet (Listed structures and setback averaging exceptions.)
“All buildings and structures must be set back at least 75 feet from the ordinary high water mark.”
Wisconsin’s Shoreland Management Program ↗Re-checked Sep 21, 2026
Building heightSpecified
Structures within 75 feet of the ordinary high water mark of navigable waters in Wisconsin shoreland zoning areas.
- The DNR model ordinance identifies this as the NR 115.05(1)(f) height standard for county shoreland ordinances.
- The prohibition does not extend beyond 75 feet from the ordinary high water mark under the stated standard.
- Counties may regulate height beyond 75 feet through local ordinance.
maximum structure height within 75 feet of ordinary high water mark: <= 35 feet (A structure taller than 35 feet is prohibited within the specified area.)
“A structure taller than 35 feet within 75 feet of the ordinary high-water mark of any navigable waters is prohibited”
Minimum Shoreland Wetland Zoning Model Ordinance ↗Re-checked Sep 21, 2026
Manufactured homesAllowed (with conditions)
Occupancy of a manufactured home installed as a new one- or two-family dwelling in Wisconsin.
- The Uniform Dwelling Code applies to new one- and two-family dwellings built since June 1, 1980.
- The UDC includes manufactured homes and the installation of manufactured homes produced on or after April 1, 2007.
- Occupancy follows a final inspection in which no major health or safety violations are found.
- Some municipalities issue occupancy permits.
- The dwelling exterior must be completed within two years after permit issuance.
- Local sanitary requirements may require certain plumbing systems.
- Local zoning and land-use requirements may also apply.
UDC coverage start date: >= 1980-06-01 date (The cited coverage is for new one- and two-family dwellings and their additions and alterations.) · manufactured-home installation coverage start date: >= 2007-04-01 date · exterior completion deadline: <= 2 years after permit issuance
“The installation of manufactured homes produced on or after April 1, 2007.”
Wisconsin’s Uniform Dwelling Code ↗Re-checked Sep 21, 2026
Septic inspectionRequired
Privately owned wastewater treatment systems and septic systems statewide in Wisconsin.
- Systems must be visually inspected at least once every three years.
- Anaerobic treatment tanks must be serviced when combined sludge and scum volume reaches one-third of tank volume.
- Counties, acting as state agents, operate maintenance-tracking programs and send reminders to landowners.
visual inspection interval: <= 3 years · combined sludge and scum service threshold: >= 33.333333 percent of tank volume (One-third of tank volume.)
“The code only requires that systems shall be visually inspected at least once every 3 years.”
Wisconsin Maintenance Program ↗Re-checked Sep 21, 2026
Off-grid sanitationLimited
Sanitation for buildings with plumbing fixtures that are not connected to a public sewer in Wisconsin.
- Off-grid wastewater handling must provide for treating, recycling, dispersing, or holding wastewater.
- Private onsite wastewater treatment systems remain subject to Wisconsin POWTS requirements and applicable plan review or permits.
- The rule does not establish unrestricted approval for any particular composting toilet, privy, holding tank, or other device.
“Where plumbing fixtures exist in a building that is not connected to a public sewer system, suitable provision shall be made for treating, recycling, dispersing or holding the wastewater.”
Wisconsin Administrative Code, SPS 382 ↗Re-checked Sep 21, 2026
Well permitLimited
Construction of private wells statewide in Wisconsin.
- A Well Construction Notification Number must be obtained before constructing a new private well that is not a high-capacity well.
- Exceptions to the notification requirement include high-capacity wells, reconstruction of existing wells, and wells on Native American property; high-capacity wells or other wells requiring written DNR approval follow the approval requirements.
- Some DNR-approved county ordinances additionally require a well permit before construction.
- A Well Construction Report must be submitted to DNR within 30 days after construction.
well construction notification fee: 50.5 USD (Fee and notification number are not refundable or transferable.) · well construction report deadline: 30 days after construction
“Wisconsin law requires that a property owner provide advance notice to DNR before construction of any new private well that is not a high capacity well, and advance notice of any heat exchange drillhole construction (geothermal system) that does not require a written DNR approval.”
Well and heat exchange notification ↗Re-checked Sep 21, 2026
Driveway accessRequired
Driveways and other connections between property abutting Wisconsin state highway right-of-way and the state highway.
- The requirement applies to work in highway right-of-way.
- The maintaining authority is the permitting authority.
- WisDOT requires a connection permit for state highways.
- Wisconsin Administrative Code Trans 231 supplies additional requirements.
- There is no cost to apply, but construction-related costs may occur.
“For state highways, WisDOT requires a connection permit.”
State highway connection permits (driveways & more) ↗Re-checked Sep 21, 2026
Building in a floodplainLimited
Development in Wisconsin floodplains, including floodway and floodfringe areas.
- Floodplain development typically requires a land use permit and a building permit.
- In the floodway, new structures, substantially improved or damaged structures, hazardous or solid-waste storage, and wells or sewage systems are prohibited.
- Floodway development is limited to open-space uses with low flood-damage potential unless the stated analysis or FEMA map-revision condition is met.
- Floodfringe structures must have the first floor elevated two feet above base flood elevation and have dryland access.
- Substantially damaged structures are subject to the stated 50-percent threshold and applicable elevation or relocation requirements.
floodfringe first-floor elevation: >= 2 feet above base flood elevation (for all new and substantially damaged or improved structures in the floodfringe)
“In the floodway, new structures, substantially improved or damaged structures, the storage of hazardous/solid waste and wells/sewage systems are prohibited.”
Floodplain Development Basics ↗Re-checked Sep 21, 2026
Short-term rentalsLimited
Lodging rented to tourists or transients for short periods in Wisconsin, including homes, condos, cabins, cottages, and similar lodging facilities.
- A DATCP lodging permit is required for all lodging facilities in Wisconsin.
- A tourist or transient must be away from the person's permanent address.
- The reviewed source does not establish local zoning or municipal operating restrictions.
“If lodging is rented to a tourist or transient, it will require a permit.”
Lodging Establishments ↗Re-checked Sep 21, 2026
Permit feesVariable (with conditions)
Wisconsin Uniform Dwelling Code permit fees for new dwellings statewide.
- Municipalities determine fees for plan examination, inspection, and issuance by ordinance.
- UDC inspection agency fees are determined by contract.
- A $30 state permit-seal fee applies for each new dwelling.
- Additional department inspection fees may apply in specified circumstances.
Wisconsin Uniform Building Permit Seal: 30 USD (per new dwelling) · departmental inspection minimum: >= 160 USD (where a department employee performs an on-site inspection related to UDC enforcement under the stated circumstances)
“The municipality shall, by ordinance, determine fees”
Wisconsin Administrative Code SPS 302.34 ↗Re-checked Sep 21, 2026
Campground & park staysLimited
Occupancy of recreational vehicles, including recreation trailers, pickup truck campers, motor homes, camper vans, and truck campers, at Wisconsin State Park System campsites.
- Camping reservations are required before setting up on any site.
- Wheeled camping units must be parked on the campsite driveway.
- A campsite may be occupied by no more than one recreation trailer, pickup truck camper, or motor home.
- Pickup campers or motor homes pulling a trailer are treated as a single unit.
recreational vehicles per campsite: <= 1 unit (Pickup campers or motor homes pulling a trailer are treated as a single unit.)
“A campsite may be occupied by no more than one recreation trailer, pickup truck camper or motor home. Pickup campers or motor homes pulling a trailer are treated as a single unit.”
Camping Rules — Wisconsin State Park System ↗Re-checked Sep 21, 2026
One more reviewed finding on this topic
- Limited — Temporary camping at Wisconsin State Park System properties.
  “Camping reservations are required and can be made up to 11 months in advance of your planned date of occupancy. Campers must make a reservation before setting up on any site.”
  Camping Rules — Wisconsin State Park System ↗Re-checked Sep 21, 2026
county zoning authorityGeneral
Wisconsin counties may enact and amend county zoning ordinances under Wis. Stat. § 59.69 for participating towns, which are generally unincorporated areas.
- County zoning applies only in towns that have adopted county zoning.
- After a comprehensive revision of the county zoning ordinance, the town has authority to decide whether county zoning applies in the town.
- Towns have authority to approve or disapprove amendments to a county zoning ordinance.
- A town that does not fall under county zoning may be unzoned or may have its own town zoning ordinance.
“Counties exercise zoning ordinances under s. 59.69, Wis. Stats. County zoning only applies in towns that have adopted county zoning.”
Local Land Use Regulations and Comprehensive Planning Status Inventory Project ↗Re-checked Sep 21, 2026
county building authorityGeneral
County authority to enforce the statewide Uniform Dwelling Code and administer building inspection and permitting for new one- and two-family dwellings in Wisconsin, including unincorporated areas where the county is the responsible inspection authority.
- The Uniform Dwelling Code applies to new one- and two-family dwellings built since June 1, 1980 and their additions and alterations.
- The UDC is enforced by municipal or county building inspection departments or the Wisconsin Division of Industry Services.
- Permit requirements for alterations and additions vary by municipality.
- Construction begins only after plans are approved and the building permit is issued and posted.
- Counties enforce the statewide UDC; the source does not establish authority for counties to adopt a separate, more or less stringent residential code.
“The UDC is primarily enforced by municipal or county building inspectors who must be state-certified. In lieu of local enforcement, municipalities have the option to have the state provide enforcement for just new homes.”
Wisconsin’s Uniform Dwelling Code ↗Re-checked Sep 21, 2026

Still unanswered

We looked and could not find an official answer yet. Silence is not permission — ask the county directly.

Minimum dwelling size — Minimum dwelling size under Dunn County zoning.
Lot coverage — Lot coverage under Dunn County zoning.
Living in an RV — Occupancy of recreational vehicles on land in Dunn County.
Camping on your land — Temporary camping on private land in Dunn County.
Tiny homes — Tiny-home occupancy in Dunn County.

2 more unanswered

Mandatory utility hookup
Agricultural exemption

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

Living off-grid in Dunn County, Wisconsin

Is Dunn County a good place to live off-grid or homestead?

Dunn County scores 64/100 on the Bolthole Index, a strong county profile. Its strengths: mixed durability signals and a stronger property-autonomy legal backdrop. Watch-outs: about 82,217 people within a 30-minute drive.

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

Dunn County generally requires a residential building permit, and it enforces county zoning. Onsite septic is permitted by Dunn County Environmental Services - Planning & Zoning (Land Use) Division. Owner-builders may act as their own contractor to build their home. These answers are quoted from official sources and independently re-checked. Rules change and cities within the county differ — always confirm with the county before you buy or build.

How much does land cost in Dunn County, Wisconsin?

Land in Dunn County runs about $4,904 per acre, based on the latest county data.

What is the water situation in Dunn County?

Dunn County gets about 34" of rain a year, with severe drought in roughly 5.3% of years.

How remote is Dunn County?

A representative private-land location has about 82,217 people within a 30-minute drive and 4,367,240 within two hours. The road-network catchments count population across county lines and clusters of smaller cities; straight-line radius values remain available as a comparison.

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

At a glance

Who to call

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

Who handles Dunn County building permits, and how do you reach them?

Does Dunn County, Wisconsin have zoning?

How do septic permits work in Dunn County?

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

What are the steps to build a home in Dunn County?

What should you check before buying land in Dunn County?

Watch-outs

Sources

Dunn County in Wisconsin

How Dunn County scores

Find land. Bring the promising ones back.

Parcel due diligence

Answers from the rulebook for Dunn County

Dunn County rules

Wisconsin rules that apply here

Still unanswered

Living off-grid in Dunn County, Wisconsin

Is Dunn County a good place to live off-grid or homestead?

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

How much does land cost in Dunn County, Wisconsin?

What is the water situation in Dunn County?

How remote is Dunn County?

How Dunn compares in Wisconsin