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Plumbing, Electrical and Mechanical Codes​​​ - Building Code Administration

Plumbing Codes and Amendments
The Maryland Department of Labor, Licensing and Regulation/Division of Occupational Professional Licensing oversees the Board of Plumbing. Information on the state and/or local adoption of the Plumbing Codes is contained on these pages. Baltimore County and local jurisdictions under the authority of the Washington Suburban Sanitary Commission are exempt from the state plumbing laws. Please refer to the each local jurisdiction to obtain information on the local adoption of a plumbing code. Since ordinances change from time to time, please contact the local jurisdiction to obtain current information.

Maryland Law and Regulations - Maryland Board of Plumbing

Electrical Codes
The Office of the State Fire Marshal has the authority to adopt the electrical code for the state. Certain local jurisdictions may adopt their own electrical codes. Please refer to the each local jurisdiction to obtain information on the local adoption of an electrical code. Since ordinances change from time to time, please contact the local jurisdiction to obtain current information.

Mechanical Codes
The Maryland Department of Labor, Licensing and Regulations has the authority to adopt the state Mechanical Code. The page contains information on the state and/or local adoption of Mechanical Codes. Please refer to the each local jurisdiction to obtain information on the local adoption of a mechanical code. Since ordinances change from time to time, please contact the local jurisdiction to obtain current information.

​Maryland Law and Regulations - Maryland Board of Heating, Ventilation, Air Conditioning and Refrigeration Contractors

More information - Division of Occupational and Professional Licensing​​​


For additional information, contact:
Department of Labor, Licensing and Regulation
Division of Labor and Industry
Building Codes Administration

1100 N. Eutaw Street, Room 606
Baltimore, MD 21201
410-767-2185
e-mail: dldlibuildingcodes-dllr@maryland.gov