New Jersey plumber license

What do you need for the master plumber license in New Jersey?

Journeyman plumbers register with New Jersey State Board of Examiners of Master Plumbers and take no exam. The master plumber license requires: age 21 or older, plus a four-year DOL-approved apprenticeship and one year (at least 1,200 hours) as a journeyman plumber in New Jersey, or an engineering bachelor's degree plus the same year.²

Keep your own record of hours, employers and pay stubs. New Jersey State Board of Examiners of Master Plumbers can ask for proof when you apply.

What is the New Jersey plumber exam like?

Master plumber applicants pass the master plumber trade exam (100 questions, 70% to pass), the master plumber practical, and the business and law exam (50 questions, 70%). The exam is given by PSI Services LLC. Code book: National Standard Plumbing Code, 2021 edition. Open book: you bring your own copy of the code book.¹

How much does the master plumber license cost?

New Jersey State Board of Examiners of Master Plumbers lists these fees.²

How do you renew it?

Every 2 years; licenses expire June 30 of odd-numbered years.² Continuing education: 5 credits at a Board-approved course every 2-year period; keep proof for 4 years.²

Does a license from another state count in New Jersey?

Possible when the other state's standards are equal to New Jersey's and that state reciprocates; the Board publishes a list of states it has reviewed.²

License levels in New Jersey

Master plumber license; journeyman plumber registration; medical gas piping installer certification.

More for plumbers in New Jersey