Maryland Plumber/Gasfitter License

• Contractors who are "insured to contract" must maintain coverage of at least $400,000 per occurrence.
• Journeyman Plumbers must show four years of experience as an apprentice and complete a 32 hour back flow course.
• Master Plumbers must have two years of experience as a Journeyman.

Work that can be Done Under this License

A Master Plumbing License covers unlimited plumbing work including sanitary drainage, water supply, storm drainage, and natural gas piping.

A Journeyman Plumbing license covers unlimited plumbing work including sanitary drainage, water supply, storm drainage, and natural gas piping while under the supervision of a Master Plumber.

Applying to get your License

Journeyman application fee: $35.00 - Master application fee: $70.00

To apply for the Plumbing Contractor license, contact:
Maryland Board of Plumbers
500 North Calvert Street, 3rd Floor
Baltimore, MD 21202
410.230.6164
410.333.6314 fax

Reciprocity Agreements

Continuing Education

Exam Details

• The Maryland Master Plumber/Gasfitter Exam has 100 questions and a time limit of 4 hours.
• A 75% is required to pass.
• The fee for the exam is $65 and pre-approval is required.
• Topics on the exam include plumbing fundamentals and safety; materials, uses, and specifications; traps, interceptors, and backwater valves; plumbing fixtures, fixture fittings, and plumbing appliances; water supply systems; backflow prevention; drain, waste, and vent systems; gas appliances and piping; and plumbing mathematics.
• To schedule your exams, contact PSI at 1-800-733-9267.

Books and References for the Exam

The following references are permitted to be taken into the examination. These references may be tabbed (with a permanent index tab) and highlighted. They are available for purchase from our online contractor’s bookstore or by calling our office at 1-800-952-0910.

• 2006 National Standard Plumbing Code
• 2007 Supplement to the National Standard Plumbing Code
• NFPA 54 - 2006 National Fuel Gas Code
• Mathematics for Plumbers and Pipefitters
• Backflow Prevention: Theory and Practice
• OSHA Code of Federal Regulations Part 1926

Exam Review, Training, Education

We will soon be offering review for the Maryland Plumber/Gasfitter (master and journeyman) examinations in a home study/tutorial format. The fee for the study guide will be $150. This study guide will include sample figures, questions, as well as a highlighting guide for the approved references. For more information, or to order, contact our office at 1-800-952-0910.