Permit Requirements for Garrison, Montana

For Plumbing projects in Garrison, determining the correct permitting authority depends on whether the project site is located within the incorporated city limits or in an unincorporated area of Powell County.

Authority Having Jurisdiction (AHJ)

Most jurisdictions require permits for Plumbing work to ensure safety and code compliance. The governing body responsible for issuing these permits varies by specific location:

General Plumbing Guidelines

Permits are usually required for new installations, structural modifications, or major repairs. While minor maintenance or cosmetic updates may be exempt, landowners should always verify local codes before work begins.

Because Garrison is located within Powell County, the following broader county regulations may also apply to your project:

Montana, Powell County Plumbing Permit Regulations and County Ordinances for Unincorporated Areas

Powell County Building and Safety Regulations

Powell County requires permits for all new residential and commercial structures. This includes any new construction intended as a dwelling or sleeping place. For properties in unincorporated areas, the Powell County Planning Department handles permit issuance. They administer zoning and land use regulations, floodplain ordinances, and ensure compliance with the county's Growth Policy. If your property is within an incorporated city, that city's building department is responsible for permits, not the county.

To obtain a permit in unincorporated Powell County, you will need to contact the Planning Department to determine the specific permit required for your project. This may involve obtaining a Development Certificate or a Conditional Use Permit. You will need to submit a complete application with all required documents, which may include construction plans, a site plan, and proof of ownership. The Planning Department typically has a two-week review period for completed applications. Construction must commence within six months of permit issuance, or the permit will expire.

Montana State Plumbing Requirements

In Montana, a Master Plumber license is required to obtain plumbing permits. A Journeyman Plumber's license does not authorize the individual to pull permits or operate a plumbing business. To become a licensed Journeyman Plumber, you generally need five years of on-the-job training and to pass an exam. To become a Master Plumber, you need four years of experience as a licensed Journeyman, including supervisory work, and to pass a master plumber exam.

Plumbing work generally requires a permit, and inspections are mandatory before any plumbing work is covered. However, there are exemptions. Homeowners performing plumbing work on their owner-occupied, single-family residence for their personal use are exempt from needing a permit, but the work must still comply with the applicable code and may be subject to inspection if other work on the project triggers it. Farms and ranches, mines, mills, smelters, railroads, and public utilities are also exempt from state plumbing permit requirements.

For public or commercial buildings, the involvement of a Montana licensed Master Plumber is mandatory for obtaining permits.

Resources to Learn More

The following statewide building codes and regulations apply universally to all jurisdictions within Montana:

Montana Plumbing Legislation, Codes, and Guidelines

State-Level Plumbing Codes in Montana

The State of Montana adopts and enforces the Uniform Plumbing Code (UPC), 2021 Edition. This code is incorporated by reference into the Administrative Rules of Montana (ARM), specifically under Title 24, Chapter 301, Subchapter 3. The state also adopts various appendices to the UPC to address specific requirements, such as water supply sizing, alternate plumbing systems, and sustainable practices.

Regulatory Agencies and Boards

Plumbing regulation in Montana is primarily managed by the Montana Department of Labor & Industry (DLI) through the following entities:

Resources to Learn More

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