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Montana Plumbers License (Journeyman/Master)

License Requirements

Requirements to Obtaining your License

Journeyman applicants must provide a specific record of 5 years’ experience, legally obtained, in the field of plumbing, or completion of an apprenticeship program meeting the standards set by the Department of Labor and Industry, or the United States Department of Labor, Bureau of Apprenticeship.

Master applicants must provide evidence of 4 years’ experience as a licensed journeyman plumber in the field of plumbing, with 3 years’ experience working with a licensed master plumber or in a supervisory capacity in the field of plumbing, which may run concurrently with the 4 years’ experience as a licensed journeyman plumber.

Work Under this License

Work that can be Done Under this License

A licensed plumber in Montana can perform all aspects of plumbing, utility connections, irrigation systems, as well as gas piping to water heaters, laundry equipment, kitchen equipment, gas grills, and swimming pool heaters.

Applications for a License

Applying to get your License

Master Plumber: The application fee is $100 and the license fee is $280.

Journeymen Plumber: The application fee is $100 and the license fee is $170.

To apply for a plumbing license, contact:
Montana State Plumbing Board
PO Box 200513
301 South Park Ave, 4th Floor
Helena MT 59620 - 0513
Phone: (406) 841-2351
Fax: (406) 841-2309


Reciprocity Agreements

Has agreements with OR, ID, ND, and SD for journeyman licensure only. The reciprocity fee, in addition to the application fee, is $300.

Continuing Education

Continuing Education

4 hours annually code-related. Course must have prior approval of Board.


Exam Details

Master Exam
  • Open Book
  • Time limit of 2 1/2 hours
  • Exam requires a 70% to pass.
Journeyman Exam
  • 2 Portions: Written and Practical
  • Both are Closed Book
  • Written Time limit is 2 1/2 hours
  • Practical Time limit is 4 hours
  • Exam requires a 70% to pass.

Books and References for the Exam

These books are available for purchase from our online contractor’s bookstore or by calling our office at 1-800-952-0910.

The following reference IS allowed in the testing center for the Master Plumber ONLY:

  • 2012 Uniform Plumbing Code
Exam Review and Education

Exam Review, Training, Education

Please check back later, as we are always adding new training material.


Buy Now, Reference Books

Reference Books

Our online store offers hundreds of books at the best pricing possible.

To find books for your exam, click here and then click "State Exam".