Plumbing, Electrical and Mechanical Codes

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Plumbing Codes and Amendments

This is a link to the Maryland Department of Labor, Licensing and Regulations. This contains information on the State and/or local adoption of the Plumbing Codes. 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

This is a link to the Office of the State Fire Marshal who has the authority to adopt the electrical code for the state. Certain local jurisdictions may adopt their own electrical code. 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.

Maryland State Fire Marshal's Office
Maryland Board of Master Electricians
Electric League of Maryland, Inc.

Mechanical Codes

This is a link to the Maryland Department of Labor, Licensing and Regulations which has the authority to adopt the State Mechanical Code. It 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
Information related to DLLR - Division of Occupational and Professional Licensing​​​