Bolthole Index

Ozaukee County, Wisconsin

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

45Index Score / 100
#66 of 72 in Wisconsin

A building permit is required for a new home in Ozaukee County, Wisconsin, but the town, village or city where the parcel lies issues it rather than the county1. Ozaukee County regulates shoreland and floodplain development in unincorporated areas and handles sanitary permits for unsewered development countywide23. General zoning outside those county-regulated areas comes from the local municipality4.

At a glance

Building permit
Required statewide under the Uniform Dwelling Code, but issued by your town, village or city - not the county15
Zoning
Local municipalities provide general zoning; the county regulates shoreland and floodplain development in unincorporated areas24
Septic
A county sanitary permit is required for a private onsite wastewater system36
Owner-builder exemption
Yes - an owner who occupies or will occupy the home can pull the construction permit personally7
Shoreland building setback
At least 75 feet back from the ordinary high-water mark8
Shoreland height limit
Structures over 35 feet are prohibited within 75 feet of the ordinary high-water mark9
Wells
A Well Construction Notification (not a county permit) is generally required before drilling10
Septic soils
Only 6.9% of county soils rate free of severe limits for a conventional drain field11

Who to call

Septic permits

Ozaukee County Land & Water Management Department

Sanitary (POWTS/septic) permits, plan review, abandonment and repair applications under the county's Sanitation and Health Ordinance

262-284-8313

121 W. Main St., Room 223, Port Washington, WI 53074

Floodplain permits

Ozaukee County Land & Water Management Department - Shoreland & Floodplain

Shoreland zoning (Chapter 19) and floodplain zoning (Chapter 18) permits for unincorporated Ozaukee County near lakes, streams and floodplains

262-284-8313

121 W. Main St., Room 223, Port Washington, WI 53074

Building permits

Town of Grafton Building Inspector

Building permits and inspections for homes in the Town of Grafton, one of several Ozaukee County municipalities that each run their own building department

(262) 377-8500

[email protected]

1220 Falls Road, Grafton, WI 53024

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 Ozaukee County, Wisconsin?

Yes. Wisconsin's statewide Uniform Dwelling Code requires a building permit for a new one- or two-family home, and in Ozaukee County these permits are issued by the individual town, village or city where the land sits, not by the county15. Construction can begin only after plans are approved and the permit is issued and posted12. A property owner who currently occupies, or will occupy, the home can take out the construction and erosion-control permits personally instead of going through a certified Dwelling Contractor, though the exemption doesn't waive the permit itself713. A building permit can't be issued for a new home on a private septic system until the county's sanitary permit has been issued first12.

Who issues building permits in Ozaukee County?

Because Wisconsin gives Uniform Dwelling Code enforcement to municipalities, Ozaukee County has no single countywide building department - each town, village and city runs its own114. The Town of Grafton's Building Inspector is one example: the town holds that it's responsible for making sure all work on homes in town meets state standards, and as of March 2023 the only kind of home project that doesn't need a permit there is putting up a fence15. If your land sits in a different Ozaukee County town, village or city, find and contact that municipality's own building inspector - Grafton's office and rules apply only within Grafton1.

Does Ozaukee County have zoning?

Ozaukee County does not apply general county zoning to private land; its general zoning ordinance covers county-owned land4. The Land & Water Management Department administers county shoreland and floodplain zoning in unincorporated areas within 300 feet of a stream, 1,000 feet of a lake or flowage, or within a floodplain that extends farther2. The floodplain ordinance divides regulated land into Floodway, Floodfringe, General Floodplain, Coastal Floodplain and Flood Storage districts, so the mapped district matters before a buyer plans a structure or use16. Development in a regulated floodplain must comply with the county ordinance and applicable permit requirements17. Outside county shoreland and floodplain jurisdiction, ask the parcel's town, village or city about use, setbacks, minimum size and other zoning standards4. Wisconsin's shoreland rules generally require a 75-foot setback from the ordinary high-water mark and prohibit structures taller than 35 feet within that band, subject to stated exceptions89.

How do septic and well permits work in Ozaukee County?

The Ozaukee County Land & Water Management Department administers sanitary rules for all unsewered development in the county3. Submit the county sanitary permit application before installing a new, replacement or modified private onsite wastewater treatment system; the application covers systems including holding tanks, in-ground systems, at-grade systems and mounds6. A building permit for a new home using a private system cannot be issued until the sanitary permit is issued12. Permitted systems must be installed, inspected, tested, operated and maintained under the applicable state rules and operation manual18. Only 6.9% of Ozaukee County soils rate free of severe limitations for a conventional drain field, so verify the parcel's site evaluation before relying on a conventional design11. For a standard private well, Wisconsin generally requires a DNR Well Construction Notification before drilling and a construction report within 30 days afterward10.

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

We could not confirm a countywide rule allowing long-term RV or tiny-home occupancy on private land in Ozaukee County. The parcel's town, village or city controls general zoning outside the county's limited shoreland and floodplain jurisdiction, so ask that municipality whether the proposed unit and occupancy are allowed before buying or moving it onto the land4. County sanitary rules still apply to unsewered development, and all wastewater must discharge into the approved private onsite wastewater treatment system19. A composting toilet, holding tank or other alternative therefore is not an automatic way around sanitary review19. Wisconsin state-park camping rules govern state campsites, not private parcels, and do not answer the private-land occupancy question20.

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

  1. Identify the parcel's town, village or city, then confirm zoning and building-permit requirements with that municipality's inspector14.
  2. For an unsewered site, submit the sanitary permit application to the Ozaukee County Land & Water Management Department36.
  3. If a private well is needed, obtain the Wisconsin DNR Well Construction Notification before drilling10.
  4. If the parcel falls in the county's unincorporated shoreland or floodplain jurisdiction, obtain the applicable county approval before development217.
  5. Apply for the home building permit through the town, village or city with at least two sets of plans121.
  6. Request inspections before covering each construction phase; the inspector has up to two business days after the request and the work is ready22.
  7. Complete the exterior within two years of permit issuance and obtain a final inspection without major health or safety violations before occupancy23.

What to check before you buy land in Ozaukee County

Identify the parcel's town, village or city before buying because that municipality generally decides permitted uses, setbacks and minimum dimensions4. Check the county maps for shoreland and floodplain jurisdiction and, in a floodplain, determine whether the parcel is in the Floodway, Floodfringe, General Floodplain, Coastal Floodplain or Flood Storage district216. Pull the parcel's soil information and obtain a site evaluation: only 6.9% of Ozaukee County soils rate free of severe limitations for a conventional septic drain field11. Confirm how every plumbing fixture will discharge because unsewered development is regulated countywide and all wastewater must go to the approved private system319. A driveway connecting to a state highway requires a WisDOT connection permit24. The nearest city of 100,000 or more is about 21 miles from the county center, while the typical property-tax bill is about $4,629 per year at an effective rate near 1.3%252627.

Watch-outs

  • Ozaukee County's zoning role is limited to shoreland and floodplain development in unincorporated areas; ask the parcel's town, village or city about the general zoning rules that apply24.
  • The Town of Grafton stopped requiring a permit for a plain fence only as of March 2023 - almost everything else still needs one, and other Ozaukee County towns may set their own list of exceptions, so confirm with your own municipality15.

Sources

  1. Town of Grafton (Ozaukee County) - Building Inspection / UDC (2026 county census)
  2. Shoreland & Floodplain Resources, quoted and re-checked
  3. Septic Resources, quoted and re-checked
  4. Ozaukee County - Shoreland & Floodplain Resources (2026 county census)
  5. One- & Two-Family (Uniform Dwelling Code) (Wisconsin statewide rule), quoted and re-checked
  6. Septic Resources, quoted and re-checked
  7. Wisconsin DSPS - Building a Home in Wisconsin (UDC Guide) (2026 county census)
  8. Wisconsin’s Shoreland Management Program (Wisconsin statewide rule), quoted and re-checked
  9. Minimum Shoreland Wetland Zoning Model Ordinance (Wisconsin statewide rule), quoted and re-checked
  10. Well and heat exchange notification (Wisconsin statewide rule), quoted and re-checked
  11. Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
  12. Wisconsin’s Uniform Dwelling Code (Wisconsin statewide rule), quoted and re-checked
  13. Wisconsin’s Uniform Dwelling Code (Wisconsin statewide rule), quoted and re-checked
  14. Wisconsin’s Uniform Dwelling Code (Wisconsin statewide rule), quoted and re-checked
  15. Town of Grafton Building Inspector (townofgraftonwi.gov)
  16. Ozaukee County Floodplain Zoning Ordinance, quoted and re-checked
  17. Shoreland & Floodplain Resources, quoted and re-checked
  18. Sanitary Permit Application, quoted and re-checked
  19. Septic Resources, quoted and re-checked
  20. Camping Rules — Wisconsin State Park System (Wisconsin statewide rule), quoted and re-checked
  21. Wisconsin Administrative Code SPS 320.09 (Wisconsin statewide rule), quoted and re-checked
  22. Wisconsin’s Uniform Dwelling Code (Wisconsin statewide rule), quoted and re-checked
  23. Wisconsin’s Uniform Dwelling Code (Wisconsin statewide rule), quoted and re-checked
  24. State highway connection permits (driveways & more) (Wisconsin statewide rule), quoted and re-checked
  25. Distance to the nearest metro area: Bolthole Index county data
  26. Median property tax bill: Bolthole Index county data
  27. Effective property tax rate: Bolthole Index county data

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.

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County locator

Ozaukee County in Wisconsin

45
County map
Ozaukee County highlighted among the Wisconsin counties · colored by Index score

How Ozaukee County scores

Seclusion16100% ev.
Self-Sufficiency55100% ev.
Admin Boringness44100% ev.
Durability79100% ev.
Property Autonomy70100% ev.
Carry Cost52100% 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 →

$514kTypical home
1.3%Property tax
$8,047Land / acre
33"Annual rain
1.5% of yrsSevere drought
1 / yr (+0.9)Mid-century 100°F days
13.5 daysMid-century dry spell
1.8" (+6.4%)Mid-century 1-day rain
1.61×Wildfire change factor
100%Forward climate coverage
$1,232Home insurance / yr
1% / yrInsurance growth
0.6%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
216,968People within 30 min
6,814,376People within 2 hr
156,734Radius comparison (15 mi)
401.1People / sq mi
1%Federal land
94.4%Land at 15% slope or less
6.9%Septic soil without severe limits
10,035 acWorkable land screen
31.7%Wooded land
35.2 tonsBiomass / forest ac
46.5°FAvg temp

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Answers from the rulebook for Ozaukee County

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

Ozaukee County rules

  • County-wide zoningPresent (with conditions)

    Ozaukee County shoreland and floodplain zoning in unincorporated areas.

    • Applies only to development within 300 feet of a stream, 1,000 feet of a lake or flowage, or areas within the floodplain when the floodplain extends farther.
    • The Land & Water Management Department administers Chapters 18 and 19 of the Ozaukee County Code of Ordinances.

    stream setback applicability distance: <= 300 feet · lake or flowage setback applicability distance: <= 1000 feet

    “Zoning regulations apply to the unincorporated areas of the county and only to development that occurs within 300 feet of a stream”
  • Zoning districtsPartial

    Floodplain zoning districts under Ozaukee County's Floodplain Zoning Ordinance.

    • The ordinance divides regulated flood hazard areas into Floodway, Floodfringe, General Floodplain, Coastal Floodplain, and Flood Storage districts.
    • Applicability is limited to areas regulated by the ordinance.
    “The flood hazard areas regulated by this ordinance are divided into districts”
  • Who permits septicCounty (with conditions)

    Sanitary and POWTS regulation in Ozaukee County.

    • The Land & Water Management Department administers Chapter 9.
    • Sanitary regulations apply to all unsewered development within the county.
    “Sanitary regulations apply to all unsewered development within the county.”
  • Septic permitRequired

    Private sewage and POWTS systems associated with unsewered development in Ozaukee County.

    • The sanitary permit application must be submitted to the appropriate governmental unit before obtaining a sanitary permit.
    • The county form includes new, replacement, modification, holding tank, in-ground, at-grade, mound, and other POWTS types.
    “required prior to obtaining a sanitary permit”
  • Septic inspectionRequired

    POWTS systems installed or modified under the Ozaukee County sanitary permitting process.

    • POWTS must be installed, inspected, tested, operated, and maintained under SPS 383 and the applicable operation and maintenance manual.
    “POWTS to be installed, inspected, tested”
  • Off-grid sanitationLimited

    Private sewage systems serving unsewered development in Ozaukee County.

    • Unsewered development is regulated by the county.
    • A sanitary permit application and permit are required before installation or operation as applicable.
    “All the wastewater created must discharge into the POWTS.”
  • Building in a floodplainRequired

    Structures and uses in areas regulated by the Ozaukee County floodplain zoning ordinance.

    • The ordinance regulates special flood hazard areas and other mapped areas approved by DNR and the local community.
    • Development must comply with all ordinance terms and other applicable regulations.
    • Failure to obtain a shoreland permit is a violation.
    “Failure to obtain a shoreland permit shall be a violation”

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.”
  • 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.”
  • 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”
    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.”
  • 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.”
  • 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.”
  • 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.”
  • 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”
  • 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.”
  • 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.”
  • 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.”
  • 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.”
  • 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”
  • 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”
  • 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.”
    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.”
  • 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.”
  • 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.”

Still unanswered

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

  • Local zoning — Aggregate municipal and town zoning within Ozaukee County.
  • Minimum dwelling size — Minimum dwelling size requirements in Ozaukee County.
  • Minimum lot size — Minimum lot-size requirements in Ozaukee County.
  • Lot coverage — Lot-coverage requirements in Ozaukee County.
  • Living in an RV — Long-term or residential RV occupancy on private land in Ozaukee County.
6 more unanswered
  • Camping on your land
  • Tiny homes
  • Accessory dwellings
  • Mandatory utility hookup
  • Agricultural exemption
  • Subdividing land

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 Ozaukee County, Wisconsin

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

Ozaukee County scores 45/100 on the Bolthole Index, a marginal county profile. Its strengths: a durable current and mid-century hazard profile and a stronger property-autonomy legal backdrop. Watch-outs: about 216,968 people within a 30-minute drive.

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

Ozaukee County generally requires a residential building permit, and it enforces county zoning. Onsite septic is permitted by Ozaukee County Land & Water Management Department. 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 Ozaukee County, Wisconsin?

Land in Ozaukee County runs about $8,047 per acre, based on the latest county data.

What is the water situation in Ozaukee County?

Ozaukee County gets about 33" of rain a year, with severe drought in roughly 1.5% of years.

How remote is Ozaukee County?

A representative private-land location has about 216,968 people within a 30-minute drive and 6,814,376 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.

Off-grid gear

Going off-grid in Ozaukee County means bringing your own water and power. The kit we’d start with:

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How Ozaukee compares in Wisconsin

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