Licensed Plumber in Michigan: How to Verify Before You Hire

Plumbing problems in Michigan homes can range from a dripping faucet to a full sewer line replacement, and the contractor you hire for each job should be properly licensed for the work. Michigan has a well-defined plumbing licensing system designed to protect public health — because improperly installed plumbing doesn't just waste water, it can contaminate it.

Does Michigan require plumbers to be licensed?

Yes, Michigan requires plumbers to be licensed through the Michigan Department of Licensing and Regulatory Affairs (LARA). Michigan issues several classes of plumbing licenses, including Master Plumber, Journeyman Plumber, and Plumbing Contractor. Each license carries different scopes of authorization and different requirements for education and examination.

Plumbing work done without a required license in Michigan is illegal. Beyond the legal risk, unlicensed plumbing work can fail inspections, void insurance, and create hidden health hazards from cross-connections or improperly vented drain systems.

Which agency licenses plumbers in Michigan?

The Michigan Department of Licensing and Regulatory Affairs (LARA) handles plumbing licensure through its Bureau of Construction Codes. Michigan plumbing work must also comply with the Michigan Plumbing Code, which is enforced at both the state and local level. The official site for licensing information and verification is michigan.gov/lara.

Local jurisdictions in Michigan may have additional permit requirements beyond the state license. Always confirm with your local building department that the plumber you hire is also compliant with any local registration requirements in your city or county.

How do you look up a plumber's license in Michigan?

Visit michigan.gov/lara/bureau-list/bpl/lic and use the online license lookup tool. Search by the plumber's name, business name, or license number. The tool returns the license type, current status, expiration date, and any disciplinary actions on record.

Confirm the status reads 'active' and that the license type matches the work you need. A Journeyman Plumber must work under a licensed Master Plumber — if a solo plumber tells you they are a journeyman working independently, that is worth verifying carefully before proceeding.

What do Michigan plumbing license classifications mean?

Michigan's plumbing licenses break down by experience and responsibility. A Master Plumber has completed the highest level of training and examination, and can supervise plumbing projects and run a plumbing business. A Journeyman Plumber can perform plumbing work under a master's supervision. A Plumbing Contractor license allows a business to contract for plumbing jobs and must be held by the company, separate from the individual plumber's personal license.

For most residential plumbing jobs, you want a company that holds a Plumbing Contractor license and sends either a Master or Journeyman Plumber to perform the work. Ask upfront which license type the person doing your work holds.

What bond and insurance should a Michigan plumber carry?

Michigan plumbing contractors are required to carry a surety bond in the range of $10,000 to $20,000, along with general liability insurance and workers' compensation coverage for employees. These requirements protect you if the contractor causes property damage, injures a worker, or fails to complete the job.

The EPA estimates that plumbing failures — including water heater malfunctions and pipe bursts — account for billions of dollars in property damage annually in the U.S. Confirming that your plumber carries adequate insurance is one of the simplest protections available to homeowners.

What are the risks of hiring an unlicensed plumber in Michigan?

Hiring an unlicensed plumber in Michigan can create serious problems that don't reveal themselves until long after the contractor is gone. Cross-connections between potable and non-potable water lines, improperly vented drain systems, and substandard pipe connections can cause contamination, sewer gases, and structural water damage over time.

From a financial standpoint, unlicensed plumbing work often fails to pass inspections, requiring you to pay a licensed plumber to tear out and redo the work. Your homeowner's insurance may also deny claims for water damage that resulted from unpermitted plumbing work, leaving you fully exposed.

How do you verify a Michigan plumber before hiring?

Look up the license at michigan.gov/lara/bureau-list/bpl/lic, confirm the status is active, and verify that the license type covers the work you need. Ask for a certificate of general liability insurance and workers' compensation. Confirm the plumber will pull the required permits — a legitimate plumber always will.

CheckLicensed.com lets you verify a Michigan plumber's license in seconds for just $0.99. It's a fast, affordable way to confirm credentials and document that you did your due diligence before any work starts on your home.