Plumber license requirements in New Jersey.
New Jersey licenses plumbing at the state level. Only a licensed Master Plumber may advertise, contract, or take responsibility for plumbing work for the public; journeymen and apprentices work under a licensed master. Licensing runs through the State Board of Examiners of Master Plumbers in the Division of Consumer Affairs, and the board requires every master plumber to renew the license every two years.
What New Jersey requires.
Master Plumber (license)
The state license. Required to advertise, bid, contract, and perform plumbing work for the public in New Jersey — the license the business runs on.
Journeyman plumber (registration)
Works under a licensed master plumber after completing an approved apprenticeship; registers with the board rather than sitting the master exams.
Apprentice
Learns the trade under supervision through a registered apprenticeship program.
Getting the Master Plumber
- Be at least 21 and a U.S. citizen or legal resident
- Complete a 4-year apprenticeship program, then at least 1 year of experience as a journeyman plumber
- Pass three exams, taken the same day on the first attempt: the Trade exam, the Practical exam, and the Business & Law exam (70% or better on each)
- Post a $3,000 surety bond
- Fees per the board’s application overview: $100 application, $240 examination, $160 biennial license
Renewal: Every two years (biennial), with 5 hours of board-approved continuing education per renewal cycle.
- · The license is statewide — issued by the state board, not by individual towns.
- · Plumbing work on your own single-family home is treated differently from working for the public; contracting for others is what requires the master license.
The official board
New Jersey State Board of Examiners of Master Plumbers (Division of Consumer Affairs)
State Plumbing License Law of 1968 (N.J.S.A. 45:14C)
(973) 504-6420
Visit the boardVerified 2026-08 against the sources below. Licensing rules change — confirm with the board before relying on this page.
Time and money, start to finish.
The path
- Apprenticeship4 yearsStep 1.
A registered apprenticeship program — document it with the board’s Work Experience Certification for Apprentice Plumber form.
- Journeyman experience1 yearStep 2.
At least one year working as a journeyman plumber after the apprenticeship.
- Application reviewStep 3.
Submit the application with your experience certifications and $100 fee; the board reviews and approves you to test. Timing varies.
- ExamsStep 4.
Schedule with PSI once approved. All three exams — Trade, Practical, and Business & Law — are taken the same day on the first attempt.
- IssuanceStep 5.
Pass all three at 70%+, post the $3,000 surety bond, pay the $160 license fee — licensed.
What it costs
Application fee
Examination fee
covers the three-part exam
Biennial license fee
also the renewal fee every two years
Surety bond
the required coverage amount — your annual premium is a fraction of this, set by the bond provider
State fees to get licensed
$500Plus your bond premium and any continuing-education course costs. Figures per the board’s application overview — confirm current amounts with the board.
Step by step
Document your experience
Complete the 4-year apprenticeship and at least 1 year as a journeyman, certified on the board’s official forms.
Work Experience Certification for Master Plumber (PDF) ↗Apply to the board
Submit the application with the $100 fee (check or money order to the State of New Jersey). Have transcripts and results sent directly to the board — not copies from you — and schedule fingerprints as soon as you get instructions.
Board applications & forms ↗Schedule your exams with PSI
Once the board approves you to test, book all three exams — Trade, Practical, Business & Law — for the same day ($240).
PSI Exams — scheduling ↗Pass, bond, and pay
Score 70%+ on each part, post the $3,000 surety bond, and pay the $160 biennial license fee.
Renew every two years
5 hours of board-approved continuing education per cycle, plus the $160 renewal fee.
The exams
Passing score: 70% on each part
PSI testing centers in New Jersey (or any PSI center nationwide), scheduled after board approval. All three parts are taken the same day on the first attempt.
Why applications get bounced
- Incomplete applications — sections left blank or instructions not followed
- Wrong or missing fee: the board wants a check or money order made out to the State of New Jersey
- Submitting copies of transcripts or exam results yourself instead of having them sent directly to the board
- Delaying the fingerprint/background-check step after receiving instructions
- Experience not properly certified on the board’s Work Experience Certification forms
Per NJ Division of Consumer Affairs — Top Tips for License Applicants (PDF)
New Jersey plumbing licensing FAQ.
Do you need a license to do plumbing work in New Jersey?
Yes. New Jersey requires a state Master Plumber license to advertise, contract, or perform plumbing work for the public. Journeymen and apprentices can work on jobs, but only under a licensed master plumber, and the state pursues unlicensed practice through the Division of Consumer Affairs.
Who issues plumbing licenses in New Jersey?
The State Board of Examiners of Master Plumbers, part of the New Jersey Division of Consumer Affairs. The board licenses master plumbers statewide, investigates complaints, and requires license renewal every two years.
How do you become a master plumber in New Jersey?
The standard path: be at least 21, complete a 4-year apprenticeship, work at least 1 year as a journeyman, then pass the board’s three exams — Trade, Practical, and Business & Law — with 70% or better on each, taken the same day on the first attempt. You also post a $3,000 surety bond and pay the application, exam, and license fees.
Does New Jersey have a journeyman plumber license?
New Jersey registers journeyman plumbers rather than licensing them by exam. After completing an approved apprenticeship you register with the board and work under a licensed master plumber; the master license is the one required to contract work for the public.
How often do New Jersey master plumbers renew their license?
Every two years. The board requires 5 hours of approved continuing education per renewal cycle, and the biennial license fee per the board’s published schedule is $160.
NJ plumbers lose more jobs to slow replies than to competitors.
Emergency calls come in while you’re elbow-deep in a repair — and roll to voicemail.
Quote requests go quiet because the follow-up text never got sent.
Repeat customers drift: nobody reminds them about the water heater you flagged last year.
Oski answers the “can you come today?” text in about a minute, follows up on every quote, and asks for the review while the fix is still fresh.
14 days free · Setup in about 15 minutes · Cancel anytime
More for plumbers
Nearby & related states
Other trades in New Jersey
Stop losing leads while you’re busy working.
Give yourself a front desk for the next 14 days — and decide for yourself if it’s worth keeping.
14 days free · Setup in about 15 minutes · Cancel anytime