Directory of Plumbers

Licensing · Maryland

Plumber licensing in Maryland

57 plumbing businesses from Maryland are listed on this directory, all labelled Unclaimed unless a business has joined and passed checks. This page states who licenses plumbers in Maryland and where that license is verified.

Who licenses plumbers in Maryland

Maryland licenses master and journeyman plumbers through its State Board of Plumbing. Some counties, notably around Baltimore and the Washington suburbs, layer local requirements on top.

How to verify a license

  1. Ask the business for its license number and the exact name the license is issued to.
  2. Search the Board of Plumbing license search and match the name to the business you are hiring.
  3. Confirm the classification covers your type of work, the status is active, and the expiration date is in the future.
  4. Check insurance separately: ask for a certificate of insurance. A license and insurance are different checks.

Maryland metros on this directory

Questions about plumber licensing in Maryland

Who licenses plumbers in Maryland?

Maryland State Board of Plumbing (Department of Labor). The model in Maryland is: state licensing.

How do I verify a plumber's license in Maryland?

Ask the business for its license number and the exact name on the license, then confirm in the official register that the name matches, the classification covers your work, the status is active, and the expiration date is in the future.

Does a license in another state count here?

No. A plumbing license authorizes work only in the jurisdiction that issued it. In local-licensing states, it may not cover the next city.

Method and cautions: plumber licensing by state (guide) · how we verify · Get matched free