State Plumbing/Gasfitters Requirements
Maryland licenses and regulates plumbers and gasfitters through the State Board of Plumbing. As of October 1, 2000, the Board issues natural gas fitter licenses to qualified individuals who are non-plumbers. Both of these types of licenses are required for work throughout Maryland, except for Baltimore County and the areas served by the Washington Suburban Sanitary Commission (WSSC) since these two jurisdictions issue their own licenses and have their own plumbing code. The State Plumbing Board also issues a certificate to qualified individuals, who are non-plumbers, to provide propane gas services throughout the State.
The State Plumbing Board may issue a reciprocal master or journeyman license to plumbers who are currently licensed in Baltimore County or WSSC. To qualify for reciprocation from WSSC or Baltimore County, you must hold both the plumbing and gas portion of the license.
Maryland has a reciprocity agreement with Delaware. For the master plumbers and gasfitters license only you can apply online or call the State Board of Plumbing for an application.
Individuals who hold a current journeyman or master gasfitter license from Baltimore City, Baltimore County or WSSC may obtain a like State Natural Gas Fitter's license.
Department of Labor – Reciprocal Licensing
Maryland Board of Plumbing
500 N. Calvert Street, Room 302
Baltimore, Maryland 21202-3651
Website: MD Dept. of Labor, Licensing and Regulation
Washington D.C. Department of Consumer and Regulatory Affairs
1100 4th St SW Suite 500
Washington, D.C. 20024