How to Get a New Jersey Plumbing License


The New Jersey State Board of Examiners of Master Plumbers is the licensing authority for plumbers working in the state. As of 2010, only master plumbers must be licensed. Journeyman plumbers and apprentices work in the state without licensing requirements. A master plumber has the qualifications to repair or install plumbing apparatus and to supervise others in completing such work, in accordance with the standards of the state board. Individuals wishing to become master plumbers in New Jersey must submit an application to take the examination to become a licensed master plumber.

  • Meet the minimum requirements for taking the examination. Prospective master plumbers must be at least 21 years old with four years of experience in an apprentice program approved by the U.S. Department of Labor and a federally-certified state agency and one year of hands-on journeyman's plumber experience. A bachelor's degree in mechanical, plumbing or sanitary engineering awarded by an institution with regional accreditation by the U.S. Department of Education or the Council on Post-Secondary Accreditation can be substituted for the four-year apprenticeship requirement.

  • Document your work experience. The application for the master plumber's examination includes a work experience certification form. This form must be signed by the licensed master plumber for whom work was performed and submitted for all work done in the past five years (for applicants completing an apprenticeship) or for work done in the past year (for applicants with a bachelor's degree).

  • Provide five years of W-2 and 1099 income tax forms to document work experience as an apprentice or one W-2 or 1099 form, if you are applying based on a bachelor's degree. The W-2 and 1099 forms provide additional documentation of the work experience of the applicant.

  • Answer all questions in the application regarding criminal history and child support obligations. The application for master plumber requires full disclosure of criminal convictions, including copies of judgments or other court documents. Applicants with child support obligations can be approved to sit for the examination, but a license will not be issued to candidates with more than six months of child support arrears.

  • Submit the completed application for master plumber's examination with all supporting documentation mentioned here to the board of examiners.

    The application also requires disclosure of immigration status, medical conditions, substance abuse, as well as defaults on student loans. The application must be submitted with a notarized affidavit asserting that all information is true and correct, two signed, full-faced passport photographs of the applicant and the non-refundable application fee in a check or money order for $100 as of 2010, payable to the State of New Jersey.

    State Board of Examiners of Master Plumbers

    124 Halsey Street, 6th Floor

    Newark, NJ 07101

  • Take the examination, once approved by the State Board of Examiners of Master Plumbers. The state board will process the completed application and determine whether you are eligible to sit for the examination. Once declared eligible, you will be notified in writing and will be sent a registration form.

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