Wisconsin, Richland County HVAC Permit Regulations and County Ordinances for Unincorporated Areas

Richland County HVAC Permit Requirements

In Richland County, Wisconsin, HVAC permit requirements depend on whether the property is located in an unincorporated area or within an incorporated city. The county's Building & Safety Division, or equivalent, handles permits for unincorporated areas. For properties within incorporated cities, the respective city's building department is responsible for permit issuance.

Wisconsin does not have a statewide HVAC contractor license. However, many municipalities require local licensing or permits for HVAC work. Essential requirements for HVAC work in Wisconsin include EPA Section 608 Certification for handling refrigerants and liability and workers' compensation insurance.

Unincorporated Areas

For properties in unincorporated areas of Richland County, the county issues building permits. This includes permits for HVAC installations. It is crucial to verify specific local requirements, as these can vary by township. Some townships within Richland County have their own zoning ordinances and may require separate permits or approvals in addition to county permits.

General HVAC Permit Information for Wisconsin

Replacing or installing a new HVAC system generally requires both mechanical and electrical permits to ensure compliance with energy and safety codes.
Homeowners may not be permitted to perform their own installation of certain HVAC units, such as air conditioning units, especially in commercial properties.
Work performed without a permit can result in penalties, often double the permit fee.
Work that is covered before an inspection may need to be uncovered for inspection.

Resources to Learn More

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

Wisconsin Hvac Legislation, Codes, and Guidelines

State Statutes and Codes Adopted

Wisconsin utilizes a hybrid approach to building codes, maintaining its own administrative code chapters that incorporate and amend national model codes. As of October 1, 2025, Wisconsin transitioned to the 2021 editions of the International Code Council (ICC) suite for commercial and multi-family residential buildings, with specific state-level amendments known as "Wisconsinisms."

Commercial and Multi-Family Buildings: These are governed by the Wisconsin Commercial Building Code, found in Chapters SPS 361–366 of the Wisconsin Administrative Code. Chapter SPS 364 specifically addresses heating, ventilating, and air conditioning (HVAC) systems by adopting the International Mechanical Code (IMC) with Wisconsin-specific modifications.
One- and Two-Family Dwellings: These are regulated under the Wisconsin Uniform Dwelling Code (UDC), found in Chapters SPS 320–325. HVAC requirements for these dwellings are specifically detailed in Chapter SPS 323.

Primary State Agencies

The primary agency responsible for the development, adoption, and oversight of building, fire safety, and energy efficiency codes in Wisconsin is the Department of Safety and Professional Services (DSPS). Within the DSPS, the Division of Industry Services (DIS) manages the programs for commercial buildings and one- and two-family dwellings, coordinating with local certified municipalities that handle plan reviews and inspections.

Resources to Learn More

Select a City in Richland 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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