Great Falls, Montana HVAC Local Permit Ordinances and Codes
Great Falls, Montana HVAC Permit Ordinances
In Great Falls, Montana, HVAC installations and modifications generally require a mechanical permit. The City of Great Falls Planning and Community Development Department, Building Safety Division, is the Authority Having Jurisdiction (AHJ) for building codes and permits. They have adopted the 2021 International Building Codes, including the International Mechanical Code (IMC). [5, 10]
Permit Requirements and Fees
A mechanical permit is typically required for:
- Replacing an existing HVAC system with the same type. Estimated fees range from $67 to $225. [3]
- Installing a different type of HVAC system. Estimated fees range from $90 to $360. [3]
- Modifying or installing ductwork. Estimated fees range from $67 to $270. [3]
- Adding central HVAC to a home. Estimated fees range from $135 to $450. [3]
Permit fees are established by the City Commission and can vary based on the project's scope and valuation. [11, 12] For commercial HVAC permits, fees are based on the total dollar value of the installation. [9]
Zoning and Other Considerations
Zoning requirements, such as setbacks and lot coverage, are separate from building permits and vary by location. It is crucial to confirm these with the local building and planning departments before starting any project. [3] The City of Great Falls also has ordinances governing landscaping, off-street parking, and outdoor lighting. [12]
Working without a required permit can lead to fines, stop-work orders, and complications when selling a property. [3]
Resources to Learn More
Because Great Falls is located within Cascade County, the following broader county regulations may also apply to your project:
Montana, Cascade County Hvac Permit Regulations and County Ordinances for Unincorporated Areas
HVAC Permit Authority in Cascade County
Cascade County does not have a local building or mechanical department that issues HVAC permits. Instead, building code enforcement, including mechanical and HVAC systems, is handled at the state level by the Montana Department of Labor and Industry (DLI) Building Codes Program. The Cascade County Planning and GIS Department is responsible for zoning and land use (such as Location/Conformance permits), but they do not enforce building or mechanical codes.
Rules for Properties in Unincorporated Areas
For properties located in unincorporated areas of Cascade County, the following rules apply regarding HVAC and mechanical work:
- State Jurisdiction: Mechanical permits for HVAC systems are administered by the Montana Department of Labor and Industry (DLI). You must apply for these permits through the state's eBiz portal or by contacting the DLI Building Codes Program directly.
- Permit Requirements: A state mechanical permit is generally required for new buildings, alterations, additions, and repairs to heating, ventilating, air-conditioning, and other mechanical systems.
- Exemptions: Certain structures are exempt from state mechanical permit requirements, such as farm and ranch buildings, mining buildings, and residential buildings containing less than five dwelling units. It is recommended to contact the DLI Building Codes Program to confirm if your specific project requires a permit.
- Inspections: Mechanical permit holders are responsible for ensuring work meets state building codes (including the International Mechanical Code and International Fuel Gas Code) and must coordinate required inspections (such as gas piping pressure tests, rough-in, and final inspections) with the state inspector assigned to the area.
- Zoning vs. Building Codes: While you may not need a county building permit for HVAC work, you must still ensure your project complies with any applicable county zoning regulations. Contact the Cascade County Planning and GIS Department to verify if your property is within a zoning jurisdictional area and if any land-use permits are required for your project.
Resources to Learn More
The following statewide building codes and regulations apply universally to all jurisdictions within Montana:
Montana Hvac Legislation, Codes, and Guidelines
Montana HVAC Building Codes and Legislation
The State of Montana enforces a statewide building code system that incorporates several model codes by reference. These codes are amended at the state level to address specific regional needs, such as snow loads and energy efficiency. For HVAC systems, the state has adopted the 2021 editions of the International Mechanical Code (IMC) and the International Fuel Gas Code (IFGC), along with the 2021 International Energy Conservation Code (IECC).
Regulatory Authority and Adoption
The primary agency responsible for establishing and enforcing these standards is the Montana Department of Labor & Industry (DLI), specifically through the Building Codes Program within the Business Standards Division. The state adopts these codes through the Administrative Rules of Montana (ARM), specifically under Title 24, Chapter 301. While the state sets the baseline, local jurisdictions (cities, counties, or towns) may be certified to enforce these codes locally. In areas without a certified local program, the state's Building Codes Program serves as the authority having jurisdiction.
Resources to Learn More