Wisconsin, Ozaukee County Remodeler Permit Regulations and County Ordinances for Unincorporated Areas

Ozaukee County, Wisconsin Remodeling and Renovation Permit Requirements

Ozaukee County's Building & Safety Division acts as the Authority Having Jurisdiction (AHJ) for building permits in the county. This division is responsible for enforcing state building codes and local ordinances to ensure construction projects meet safety and structural standards. For properties located in unincorporated areas of Ozaukee County, the county's Building & Safety Division directly oversees permit requirements and inspections. This means residents in these areas will interact with the county for all their building permit needs, rather than a local town or village office.

Demolition Work During Remodeling

Demolition work, even as part of a larger remodeling project, often triggers specific permit requirements in Ozaukee County. Generally, any demolition that involves the removal of structural components, or a significant portion of a building, will require a permit. This is to ensure that the demolition is conducted safely, with proper precautions taken to protect workers and surrounding properties, and that any hazardous materials, such as asbestos, are handled and disposed of according to regulations. It is advisable to contact the Building & Safety Division directly to determine if your specific demolition plans require a permit.

Converting Non-Living Spaces to Habitable Areas

Altering or converting non-living spaces such as garages, attics, or unfinished basements into habitable living areas is considered a significant change to the building's occupancy and use, and therefore requires a building permit in Ozaukee County. This process typically involves ensuring that the converted space meets current building codes for habitable areas, which include requirements for:

Minimum ceiling heights
Egress (emergency escape and rescue openings, such as windows)
Ventilation and heating
Electrical and plumbing systems
Structural integrity
Insulation

The definition of "habitable space" generally refers to any space within a dwelling intended for living, sleeping, eating, or cooking. Converting a garage, for instance, would require ensuring it is properly insulated, has adequate heating and cooling, and meets all egress requirements. Similarly, attics and basements must be brought up to code for occupancy, which may involve structural reinforcements, proper insulation, and the installation of required safety features.

Resources to Learn More

Note: The following state-wide building codes and regulations apply universally to all jurisdictions within Wisconsin, including Ozaukee County.

Wisconsin Remodeler Legislation, Codes, and Guidelines

Wisconsin State Building Codes and Legislation for Remodelers and Residential Renovations

Wisconsin's building codes for remodelers and residential renovations are primarily governed by the Department of Safety and Professional Services (DSPS). The state adopts and modifies model codes from the International Code Council (ICC) to create its own administrative codes.

1. Specific State Statutes and Codes Adopted

For one- and two-family dwellings, the Uniform Dwelling Code (UDC), found in Wisconsin Administrative Code chapters SPS 320-325, applies. This code sets minimum standards for fire safety, structural strength, energy conservation, and general health and safety. The UDC is based on model codes but includes Wisconsin-specific adjustments.
For commercial and multi-family residential buildings, Wisconsin is transitioning to the 2021 International Building Code (IBC) standards, with additional state-specific adjustments. This updated code will take effect on September 1, 2025, and will be found in Wisconsin Administrative Code chapters SPS 361-366. Previously, the state used the 2015 editions of the model codes.
The International Existing Building Code (IEBC) is adopted and modified within Chapter SPS 366 of the Wisconsin Administrative Code, which covers the repair, alteration, change of occupancy, addition, or relocation of existing buildings.

2. Primary State Board or Agencies

The Department of Safety and Professional Services (DSPS) is the primary state agency responsible for setting and enforcing building codes and standards in Wisconsin.
Local municipalities also play a role in enforcing the UDC and may have their own specific permit requirements.

3. Classification of Remodels and Demolition Guidelines

Cosmetic vs. Structural Alterations: The UDC covers alterations to one- and two-family dwellings. While inspectors focus on code compliance, "cosmetic or non-code workmanship items will not normally be ordered corrected." However, deviations from approved plans may require revised submittals. The Wisconsin Home Improvement Practices Act (HIPA), found in Chapter ATCP 110 of the Administrative Code, defines "home improvement" broadly to include remodeling, altering, repairing, painting, or modernizing residential property, including additions. The definition of "remodel" in Wis. Stat. § 101.148 specifically means to alter or reconstruct a dwelling, and does not include maintenance or repair work.
When Demolition Guidelines Apply: Demolition activities require a demolition permit, which ensures compliance with local building codes and zoning laws. Specific requirements may include asbestos inspections for buildings constructed before the 1980s, utility clearances, and environmental inspections. In some municipalities, like Milwaukee, there are specific deconstruction ordinances for older structures to maximize salvageable materials. For demolition permits, all utility connections must be sealed and plugged, and a permit for boarding is not required if a demolition permit is obtained.

Resources to Learn More

Select a City in Ozaukee County

If your project is located within incorporated city limits, you will likely need to follow municipal ordinances rather than county rules. Select your city below to view local regulations.

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