Fond du Lac County, WI Building Permits & Zoning

A building permit is required for a new one- or two-family home in Fond du Lac County, Wisconsin, and construction may start only after the plans are approved and the permit is issued and posted¹². Each town has its own permit issuer and zoning ordinance, while the county handles septic systems and site-specific floodplain approvals³⁴⁵⁶.

At a glance

Building permit: Required for a UDC-covered one- or two-family home; obtain it before construction starts²
Zoning: No countywide zoning; each of the 21 towns has its own zoning ordinance and permit issuer⁴
Septic: County-administered POWTS program (Code Enforcement Office), under state code and county ordinance⁵
Owner-builder: A current or future owner-occupant may take out the construction and erosion-control permits; other trade rules still apply⁷
Shoreland setback: At least 75 feet back from the ordinary high-water mark, with limited exceptions⁸
Shoreland building height: A structure over 35 feet is prohibited within 75 feet of the ordinary high-water mark⁹
Wells: A Well Construction Notification Number is required before drilling most new private wells¹⁰
Septic soils: About a quarter of the county's soils rate free of severe limits for a conventional drain field¹¹

Who to call

Planning & zoning

Fond du Lac County Planning & Development (Principal Planner)

Comprehensive planning, farmland preservation, GIS parcel lookups, and confirming which of the 21 towns' zoning ordinance and building-permit issuer applies to a given parcel

(920) 929-3138

160 S. Macy Street, Fond du Lac, WI 54935

Zoning

Fond du Lac County Code Enforcement Office (Code and Zoning Coordinator)

Countywide shoreland and floodplain zoning, nonmetallic mining, junk-vehicle and other code-enforcement matters outside the 21 towns' own zoning ordinances

(920) 929-3140

160 S. Macy Street, Fond du Lac, WI 54935

Septic permits

Fond du Lac County Code Enforcement Office (POWTS Program)

Private Onsite Wastewater Treatment System (POWTS/septic) permitting and required maintenance/pumping tracking under Wisconsin Administrative Code SPS 383 and county ordinance

(920) 929-3139

160 S. Macy Street, Fond du Lac, WI 54935

Contact details are copied from each office’s official page and were checked against it on September 29, 2026.

Do you need a building permit in Fond du Lac County, Wisconsin?

Yes. Wisconsin's Uniform Dwelling Code applies to new one- and two-family dwellings in Fond du Lac County built since June 1, 1980, including covered additions and alterations¹. Each town has its own UDC permit issuer, and construction may begin only after the plans are approved and the building permit is issued and posted³². At least two plan sets are required¹². A current or future owner-occupant may take out the construction and erosion-control permits without the certified-contractor arrangement, but that allowance does not erase the permits or other applicable trade requirements⁷. During construction, request inspection of each phase before covering the work; the inspector has two business days after a ready inspection request before the work may be covered¹³¹⁴. Occupancy follows a final inspection with no major health or safety violations, and some municipalities also issue an occupancy permit¹⁵.

Who issues building permits in Fond du Lac County, and how do you reach the county offices?

The town containing the parcel issues the UDC building permit and administers its own zoning ordinance; Fond du Lac County does not provide one countywide permit counter for those approvals³⁴. Start by identifying the town, then contact its zoning and building-inspection authorities for the application, local rules and prerequisites¹⁶. If the parcel's jurisdiction is unclear, Fond du Lac County Planning & Development can help with parcel mapping and the correct local contact at 160 S. Macy Street, Fond du Lac, or 920-929-3138¹⁷. County Code Enforcement is the contact for county-administered shoreland and floodplain matters at 920-929-3140¹⁸. Permit fees are set locally, so the amount must be confirmed with the town or its inspection agency¹⁹.

Does Fond du Lac County have zoning?

Fond du Lac County has no general countywide zoning; each town controls its own zoning ordinance and permit issuer, so allowed uses, setbacks, minimum home size, RV living and tiny-home placement depend on the parcel's town⁴. The county still administers shoreland and floodplain overlays. In the shoreland zone, buildings and structures generally must be at least 75 feet from the ordinary high-water mark, subject to listed exceptions and setback averaging, and a structure taller than 35 feet is prohibited within that same 75-foot band⁸⁹. Floodplain, zoning and land-use approvals must come from the county and municipality with authority before UDC-covered residential construction proceeds⁶. A buyer dividing unincorporated land also needs county Planning Department review and approval when the division is 35 acres or less²⁰.

How do septic permits work in Fond du Lac County?

Septic is one of the few things Fond du Lac County itself runs directly: the county's Code Enforcement Office administers Private Onsite Wastewater Treatment Systems (POWTS) under Wisconsin Administrative Code SPS 383 and the county's own POWTS ordinance⁵²¹. Statewide, a system must be visually inspected at least once every three years, and Fond du Lac County's Code Enforcement Office runs the maintenance-tracking program that sends pumping reminders to landowners based on tank size²²²¹. A new dwelling that will use a POWTS can't get its building permit until the sanitary permit is issued, so line up septic approval early in the process²³. Soils here are better than in many counties: USDA soil survey data rates about 25.3% of Fond du Lac County's soils as free of severe limits for a conventional septic drain field, which still means the majority of the county's soils face some limitation, so a site evaluation remains worthwhile before you commit to a parcel¹¹.

Can you live in an RV or tiny home on your land in Fond du Lac County?

There's no state or county answer that covers every parcel: because zoning in Fond du Lac County is set town by town, whether you can live in an RV or a tiny home on your own land depends on the zoning ordinance of the specific town where the parcel sits, not on a countywide rule⁴. Wisconsin's state park RV rules, such as the one-recreational-vehicle-per-campsite limit, only govern camping at Wisconsin State Park System campgrounds and have nothing to do with occupying an RV on privately owned rural land, so don't treat them as an answer here²⁴. Before buying with either plan in mind, call the specific town's zoning office (Fond du Lac County's Planning & Development office can help identify which town that is) to ask directly about RV or tiny-home occupancy¹⁷.

Building a home in Fond du Lac County: the steps, in order

Identify the parcel's town and contact its zoning and building-inspection authorities for local rules and the permit application¹⁶.
If dividing unincorporated land into a parcel of 35 acres or less, obtain county Planning Department review and approval²⁰.
Secure required county and municipal floodplain, zoning and land-use approvals before residential construction⁶.
If the home will use private septic, obtain the county POWTS sanitary permit before the building permit can be issued⁵²³.
If drilling a private well, obtain the required Well Construction Notification Number before drilling¹⁰.
Submit the application, fees, related approvals and at least two plan sets; begin only after approval and permit posting¹⁶¹²².
Request each construction-phase inspection before covering the work, then wait for a final inspection with no major health or safety violations before occupancy¹³¹⁵.

What to check before you buy land in Fond du Lac County

Before making an offer, identify the parcel's town and get its answers on use, setbacks, minimum home size, RVs and tiny homes because Fond du Lac County has no general countywide zoning⁴. Ask county Planning whether a proposed division of unincorporated land needs review; divisions of 35 acres or less require county approval²⁰. Check floodplain and shoreland constraints before choosing a building pad, because county and municipal approvals may be required and shoreland buildings generally must remain at least 75 feet from the ordinary high-water mark⁶⁸. Evaluate septic feasibility early: only about 25.3% of mapped soils rate free of severe limits for a conventional drain field¹¹. Confirm legal driveway access too; a connection to a state highway requires a WisDOT permit²⁵. For a private well, advance notice to the Wisconsin DNR is generally required before drilling¹⁰.

Watch-outs

Fond du Lac County does not provide one countywide building-permit or general-zoning counter; identify the parcel's town before applying⁴³.
A new dwelling on a private septic system cannot get its town building permit until the county's POWTS sanitary permit is issued, so start the septic process early²³²¹.
A land division of 35 acres or less outside an incorporated area requires review and approval by Fond du Lac County Planning²⁰.
Floodplain, zoning and land-use approvals are site-specific and must be obtained from the county and municipality with authority⁶.

Sources

Written September 29, 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 Fond du Lac County scores

Seclusion23100% ev.

Self-Sufficiency56100% ev.

Admin Boringness61100% ev.

Durability70100% ev.

Property Autonomy70100% ev.

Carry Cost58100% 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 →

$297kTypical home

1.6%Property tax

$7,870Land / acre

33.1"Annual rain

1.5% of yrsSevere drought

1.2 / yr (+1.2)Mid-century 100°F days

13.9 daysMid-century dry spell

1.7" (+7.7%)Mid-century 1-day rain

1.68×Wildfire change factor

100%Forward climate coverage

$1,119Home insurance / yr

1.9% / yrInsurance growth

0.84%Nonrenewal rate

county median (2+ published ZIPs)Insurance basis

104,340People within 30 min

4,325,743People within 2 hr

99,357Radius comparison (15 mi)

144.5People / sq mi

1.1%Federal land

93.6%Land at 15% slope or less

25.3%Septic soil without severe limits

109,686 acWorkable land screen

17.1%Wooded land

45.2 tonsBiomass / forest ac

45.4°FAvg temp

Answers from the rulebook for Fond du Lac County

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

Fond du Lac County rules

Subdividing landRegulated (with conditions)
Land divisions outside incorporated areas of Fond du Lac County.
- All land divisions outside incorporated areas are reviewed by the County Planning Department.
- Any land division 35 acres or less is required to be reviewed and approved.
- Authority is stated to be in Chapter 48 of the Fond du Lac County Code.
land division acreage threshold: <= 35 acres
“The County Planning Department is responsible for reviewing and approving all land divisions outside the incorporated areas within the County. Any land division 35 acres or less is required to be reviewed and approved.”
Land Divisions ↗Re-checked Sep 25, 2026
County-wide zoningAbsent
Fond du Lac County has no county-wide general zoning; each of its 21 towns controls its own zoning ordinance and permit issuers (the county administers only shoreland/floodplain overlay zoning).
Fond du Lac County - Town Zoning ↗Scouted from the county site, not yet independently re-checked

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 — Construction of a UDC-covered one- or two-family dwelling.
  “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
One more reviewed finding on this topic
- Available (with conditions) — Construction and erosion-control permits for a dwelling occupied by the owner.
  “or by the owner who occupies the home currently or will after completion.”
  Wisconsin’s Uniform Dwelling Code ↗Re-checked Sep 25, 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
2 more reviewed findings on this topic
- Adopted (with conditions) — New one- and two-family dwellings in Fond du Lac County and elsewhere 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 25, 2026
- 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
One more reviewed finding on this topic
- Required — UDC-covered one- and two-family dwelling construction.
  “Call for inspections of each phase of construction prior to covering it up”
  Wisconsin’s Uniform Dwelling Code ↗Re-checked Sep 25, 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
One more reviewed finding on this topic
- Limited — Occupancy of a completed UDC-covered dwelling.
  “Take occupancy after receiving a final inspection in which no major health or safety violations are found. (Some municipalities will issue occupancy permits.)”
  Wisconsin’s Uniform Dwelling Code ↗Re-checked Sep 25, 2026
Zoning districtsPartial
Statewide floodplain zoning guidance; the Wisconsin DNR publishes a model floodplain ordinance for communities but does not thereby establish every local zoning district.
- The source describes a model ordinance that communities should use when amending, repealing, or recreating a floodplain ordinance.
- The source does not provide a statewide inventory or complete publication of local zoning districts.
- Local community adoption and local ordinance details remain necessary.
“This is the model version that should be used by any community amending or repealing and recreating a floodplain ordinance.”
Floodplain Zoning and Management Resources ↗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
Who permits septicMixed (with conditions)
Private onsite wastewater treatment systems statewide in Wisconsin.
- DSPS regulates and reviews POWTS plans for domestic wastewater systems.
- Large domestic POWTS and systems involving non-domestic or mixed wastewater may require joint DNR and DSPS review.
- Local certified municipalities and counties may provide plan review for certain installations.
“Plans for Private Onsite Wastewater Treatment Systems (POWTS) are subject to review by the Department of Safety and Professional Services (DSPS), or may require a joint review by the DNR and DSPS.”
Private Onsite Wastewater Treatment Systems (POWTS) ↗Re-checked Sep 21, 2026
Septic permitLimited
Large private onsite wastewater treatment systems in Wisconsin.
- A County Sanitary Permit is required in addition to WPDES permit coverage.
- Construction may begin before WPDES issuance, but discharge may not begin until the WPDES permit is issued.
- Large POWTS generally involve design flow near or above 12,000 gallons per day or more than 85 residential bedrooms.
residential bedrooms threshold: > 85 bedrooms (Large-system classification threshold described by DNR.) · nonresidential design flow threshold: > 12000 gallons per day (Large-system classification threshold described by DNR.)
“A County Sanitary Permit must be obtained in addition to the WPDES permit. Construction may commence prior to the WPDES permit issuance, but a system cannot start discharging until the WPDES permit is issued.”
Joint DNR/DSPS Plan Review Procedures For Large POWTS ↗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
One more reviewed finding on this topic
- Required — UDC-covered residential construction where floodplain, zoning, or land-use approvals apply.
  “Obtain floodplain, zoning and land use approvals from the county and municipality having authority.”
  Wisconsin’s Uniform Dwelling Code ↗Re-checked Sep 25, 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
Permit processPublished (with conditions)
Wisconsin Uniform Dwelling Code permits for one- and two-family dwellings statewide.
- Applications are filed with the municipality or authorized UDC inspection agency.
- Completed forms, fees, plans, documents, and local prerequisite permits are required before issuance.
- Applications are reviewed by a certified UDC inspector.
- At least two sets of plans are required.
- The permit is issued only after filing and fee requirements are satisfied and plans are conditionally approved.
minimum plan sets: >= 2 sets (for one- and two-family dwellings)
“At least 2 sets of plans for all one- and 2-family dwellings shall be submitted”
Wisconsin Administrative Code SPS 320.09 ↗Re-checked Sep 21, 2026
One more reviewed finding on this topic
- Partial — UDC-covered residential construction in Fond du Lac County.
  “Make initial contact with local zoning and local or state building inspection departments to get a Building Permit Application, zoning rules and other basic information.”
  Wisconsin’s Uniform Dwelling Code ↗Re-checked Sep 25, 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.

Local zoning — Aggregate of town, village, and city zoning within Fond du Lac County.
Minimum dwelling size — Minimum dwelling size requirements in Fond du Lac County.
Minimum lot size — Minimum lot size requirements in Fond du Lac County.
Lot coverage — Lot coverage requirements in Fond du Lac County.
Living in an RV — Long-term or residential RV occupancy on private land in Fond du Lac County.

5 more unanswered

Camping on your land
Tiny homes
Accessory dwellings
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 Fond du Lac County, Wisconsin

Is Fond du Lac County a good place to live off-grid or homestead?

Fond du Lac County scores 56/100 on the Bolthole Index, a solid county profile. Its strengths: 26 operating mines and a stronger property-autonomy legal backdrop. Watch-outs: about 104,340 people within a 30-minute drive.

Do you need a building permit in Fond du Lac County, Wisconsin?

Fond du Lac County generally requires a residential building permit, and it has no county-wide zoning. Onsite septic is permitted by Fond du Lac County Land Information Department, Code Enforcement Office. 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 Fond du Lac County, Wisconsin?

Land in Fond du Lac County runs about $7,870 per acre, based on the latest county data.

What is the water situation in Fond du Lac County?

Fond du Lac County gets about 33.1" of rain a year, with severe drought in roughly 1.5% of years.

How remote is Fond du Lac County?

A representative private-land location has about 104,340 people within a 30-minute drive and 4,325,743 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 septic rules in Fond du Lac County, Wisconsin

At a glance

Who to call

Do you need a building permit in Fond du Lac County, Wisconsin?

Who issues building permits in Fond du Lac County, and how do you reach the county offices?

Does Fond du Lac County have zoning?

How do septic permits work in Fond du Lac County?

Can you live in an RV or tiny home on your land in Fond du Lac County?

Building a home in Fond du Lac County: the steps, in order

What to check before you buy land in Fond du Lac County

Watch-outs

Sources

Fond du Lac County in Wisconsin

How Fond du Lac County scores

Find land. Bring the promising ones back.

Parcel due diligence

Answers from the rulebook for Fond du Lac County

Fond du Lac County rules

Wisconsin rules that apply here

Still unanswered

Living off-grid in Fond du Lac County, Wisconsin

Is Fond du Lac County a good place to live off-grid or homestead?

Do you need a building permit in Fond du Lac County, Wisconsin?

How much does land cost in Fond du Lac County, Wisconsin?

What is the water situation in Fond du Lac County?

How remote is Fond du Lac County?

How Fond du Lac compares in Wisconsin