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Minnesota Plumber License General FAQ
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.
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.
- General Regulations
- Plumbing Math
- Fixtures, Faucets, and Fixture Fittings
- Water Heaters
- Water Supply and Distribution
- Sanitary Drainage
- Indirect and Special Waste
- Traps, Interceptors, and Separators
- Storm Drainage
- Hands-On Practical Application
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