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Maryland
Plumbers in Maryland
55 plumbing businesses in the metro area within about 25 miles of Baltimore – plus how Maryland licenses plumbers.
Metro areas
Maryland cities we cover
Across the state line
Nearby metro areas with Maryland plumbers
These city pages include plumbers based in Maryland.
Maryland rules
Do plumbers need a license in Maryland?
How Maryland licenses plumbers
Licensing is split between the state and local governments.
Who licenses: Maryland State Board of Plumbing (Maryland Department of Labor)
License types: Master Plumber/Gas Fitter, Journey Plumber/Gas Fitter, Apprentice Plumber/Gas Fitter, Master Natural Gas Fitter, Journey Natural Gas Fitter, Apprentice Natural Gas Fitter.
Businesses: Journey and apprentice plumbers work under the direction and control of a licensed master plumber; the Board's requirements page does not list a separate plumbing contractor license.
Local rules: WSSC Water runs its own plumber and gasfitter licensing within its service district (it reciprocates Maryland State, Baltimore County and Virginia licenses), and Baltimore County issues its own gas fitter licenses.
Check a license: dllr.state.md.us
Verify the plumber's Maryland license with the Board of Plumbing's online search, and if you are in the WSSC Water service area, also check WSSC's plumber lookup.
We could not confirm every detail from Maryland’s own sources, so treat this as a starting point and check with the agency.
Sources: labor.maryland.gov, labor.maryland.gov, wsscwater.com. Checked October 2026 from official sources. This is not legal advice.
Before you hire
Ask for the license number and check it on the official lookup where one exists. Ask for proof of insurance and a written, itemized estimate, and ask who pulls the permit if the job needs one – water heaters, repiping and sewer lines often do.
Questions
Maryland plumbing questions
Do plumbers need a license in Maryland?
In Maryland, licensing is split between the state and local governments through the Maryland State Board of Plumbing (Maryland Department of Labor). You can check a license at dllr.state.md.us.
Where in Maryland do you list plumbers?
In Maryland: Baltimore (35). Each city page lists plumbers based within about 25 miles (35 in smaller metro areas) whose own website names that city or nearby towns.
How do I get a plumber listed in Maryland?
Plumbing businesses can add their business free. We check every listing against the business’s own website.
Neighboring states: Pennsylvania · Delaware · Virginia · West Virginia · District of Columbia.
Free plumber request
Tell us the problem. We’ll connect you with a local plumber in Maryland.
- 1Tell us the job and your ZIP code
- 2We send it to listed plumbers who serve your area
- 3They contact you directly
Free, no obligation. If no listed plumber serves your area, we’ll tell you. Water pouring in? Shut off the main valve first, then call a plumber from the list.