Plumbers in New Jersey

How New Jersey licenses plumbers

Plumbers are licensed by the state.

Who licenses: New Jersey State Board of Examiners of Master Plumbers (Division of Consumer Affairs)

License types: Master Plumber.

Businesses: A plumbing business must have a licensed master plumber who owns at least 10 percent of it registered with the board as its bona fide representative, and its vehicles and advertising must show the plumbing license number (N.J.A.C. 13:32-1.3, 13:32-3.1, 13:32-3.2).

Check a license: newjersey.mylicense.com

Confirm the company is working under a New Jersey licensed master plumber in good standing, which the Division of Consumer Affairs lets you check online or by phone at 973-504-6420.

We could not confirm every detail from New Jersey’s own sources, so treat this as a starting point and check with the agency.

Sources: njconsumeraffairs.gov, newjersey.mylicense.com, njconsumeraffairs.gov. Checked October 2026 from official sources. This is not legal advice.

Before you hire

Ask for the license number and check it on the official lookup where one exists. Ask for proof of insurance and a written, itemized estimate, and ask who pulls the permit if the job needs one – water heaters, repiping and sewer lines often do.

Eight questions to ask every plumber