Plumber Licensing in Minnesota

Minnesota Plumber License Verification

In Minnesota, the plumbing profession is primarily governed by the Minnesota Department of Labor and Industry (DLI), specifically its Construction Codes and Licensing Division (CCLD) and the Plumbing Board. For 2026, individuals aspiring to or practicing plumbing in Minnesota must adhere to a multi-tiered licensing structure. This includes registration as an Unlicensed Individual (formerly apprentice), progressing to a Journeyworker Plumber, and then potentially to a Master Plumber. A Plumbing Contractor license is also available for businesses, requiring a designated responsible licensed individual who holds a Master Plumber license.

To obtain a Journeyworker license, typically four years (7,000 hours) of recorded practical plumbing experience as a DLI-registered Unlicensed Individual or completion of a DLI-registered apprenticeship program is required, followed by passing a licensing exam. For a Master Plumber license, one year of practical plumbing experience as a licensed Journeyworker Pl is generally required, along with passing a more advanced exam. All licensed Journeyworker and Master Plumbers must complete 16 hours of approved continuing education every two-year license period, with at least eight hours pertaining to the State Plumbing Code. Unlicensed Individuals must complete two hours of continuing education annually. Licenses are subject to renewal, with specific deadlines and fees depending on the license type.

Insurance and Bonding Mandates

Plumbing contractors operating in Minnesota are subject to strict insurance and bonding requirements. As of 2026, contractors must maintain public liability insurance with minimum coverage limits of $50,000 per person, $100,000 per occurrence, and $10,000 for property damage. For businesses with employees, workers' compensation insurance is mandatory. Additionally, a $25,000 surety bond is required for all plumbing contractors. It is crucial that the Minnesota Department of Labor and Industry is listed as a "certificate holder" on all insurance documents. Effective January 15, 2026, all insurance submissions to the DLI must be made electronically.

Permitting and Local Regulations

In accordance with the Minnesota State Plumbing Code, permits are required for any installation, addition, extension, alteration, or replacement of a plumbing system. Separate utility permits are also necessary for outside underground sewer, water, or septic systems. All plumbing inspection permits must be applied for by a licensed plumbing contractor, licensed water conditioning contractor, or other authorized license holder. Commercial plumbing projects typically necessitate a plan review. It is important to note that a permit becomes null and void if work is not commenced within 180 days or is suspended for a period of 180 days after commencement. While state licensing sets statewide standards, some local jurisdictions, such as Minneapolis and St. Paul, may require additional local certification, though these cities often have reciprocal agreements.

Official Minnesota Resources

For detailed information and compliance, plumbers should refer to the official resources provided by the Minnesota Department of Labor and Industry. The DLI website offers comprehensive information on licensing, continuing education, and permitting processes.

Validation Disclaimer

Regulations can change. We recommend contacting the Minnesota licensing board directly before performing any work. Unlicensed contracting may carry significant legal penalties in this jurisdiction.