Plumbers Training Institute 2021 Spring

What are the types of plumbing licenses available in Minnesota?

Plumbing contractor: a person who may contract to perform or offer to perform plumbing work in all areas of the state provided the contractor has at all times a licensed master plumber as a responsible individual and maintains compliance with the required bond, general liability insurance and workers' compensation insurance requirements (Minnesota Statute 326B.46). Person is defined as an individual proprietor, partnership, corporation, limited liability company, limited liability partnership, limited partnership or any other legal entity.

Master plumber: an individual who is skilled in the planning, superintending and the practical installation of plumbing, who is otherwise lawfully qualified to contract for plumbing and installations and to conduct the business of plumbing and who is familiar with the laws and rules governing the same. This license authorizes the individual to perform plumbing statewide, for both interior plumbing and exterior water service, sanitary sewer and storm sewer systems within the property lines.

Journeyman plumber: an individual, other than a master plumber, who, as a principal occupation, is engaged as an employee of, or is otherwise working under the direction of, a master plumber in the practical installation of plumbing. This license authorizes the individual to work statewide, for both interior plumbing and exterior water service, sanitary sewer and storm sewer systems within the property lines.

Unlicensed individual - plumbing: any person, other than a journeyman or master plumber (or restricted master or restricted journeyman plumber), who, as a principal occupation, is engaged in working as an employee of a plumbing contractor under the direct supervision of either a master or journeyman plumber (or restricted master or restricted journeyman plumber) or plumbing contractor in learning and assisting in the installation of plumbing.

How do I get a journeyman or master plumbing license in Minnesota?

Complete the Application and Work experience verification form.
Plumber Journey Worker, 7000 total hours
2000 hours drain, waste, vent installation
1000 hours fixture installation
2000 hours water distribution installation

Master Plumber, 1750 total hours
Must have at least one year of practical plumbing experience as a licensed journey worker plumber; or
A current master plumber license from another state where the requirements of the licensing jurisdiction are equivalent to those of Minnesota, as determined by the commissioner; or
A current Minnesota restricted master plumber license and five years of verifiable experience in business as a plumbing contractor in Minnesota.

Submit it to the state. Once approved you will be able to schedule your exam.

What code is the Minnesota plumbing test based on?

2015 Minnesota Plumbing Code - Includes Chapter 4714, Chapter 4716, Chapter 1300, and miscellaneous statutes related to the Minnesota Plumbing Code.

What are the examination fees for a plumbing license in Minnesota?

Exam Application Fee for Master Plumber and Journey worker Plumber: $50

What does your Minnesota plumber exam prep cover?

  • Administration
  • Definitions
  • General Regulations
  • Plumbing Math
  • Fixtures, Faucets, and Fixture Fittings
  • Water Heaters
  • Water Supply and Distribution
  • Sanitary Drainage
  • Indirect and Special Waste
  • Vents
  • Traps, Interceptors, and Separators
  • Storm Drainage
  • Appendices
  • Hands-On Practical Application

What can I expect from the Minnesota plumbing exams?

Exam Guide

Is the Minnesota Plumber exam open book?

Yes, reference materials will be provided at the testing site.

Where can I take the Minnesota plumbing exams?

The MN plumbing exam can be taken ant DLI locations throughout the state.

What should I bring to the Minnesota plumber exams?

- A government issued ID

How do I know if I passed the Minnesota plumber exam?
1. Examination results are mailed to applicants within two weeks of the examination. Examination results are not provided to applicants by telephone or e-mail.
2. Examination result letters mailed to applicants who passed their examinations will contain directions on how to obtain their license.
3. Examination result letters mailed to applicants who failed their examinations will contain directions on how to make subsequent application.

Are there accommodations for individuals with special needs during the plumbing licensing exam?

The ADA requires this agency to make “reasonable accommodations” for applicants with disabilities in giving the examinations.

Does Minnesota offer reciprocity for plumbing licenses?

Plumbers licensed in North Dakota or South Dakota who wish to become licensed in Minnesota by reciprocal agreement must contact their state plumbing board to receive a Certificate of State Endorsement.

The reciprocity agreements with North Dakota and South Dakota apply to nonresident (not a resident of Minnesota) licensed plumbers who have passed the examination for plumber licensure in either North Dakota or South Dakota.

Who issues Minnesota plumbing licenses?

Construction Codes and Licensing Division
Licensing and Certification Services - Plumbing
443 Lafayette Road North
P.O. Box 64217
St. Paul, MN 55164-0217
Telephone: (651) 284-5031

Useful links:

License Application Links
examination application

Licensing- Personal Plumber Licenses

Licensing- Plumbing Contractor License

  • Information Last Updated: 04/2020
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