How to Check a Plumber's License in New Jersey: 5 Steps
By Mike Holt, NJ Master Plumber · November 2, 2026 · 2 min read · Updated November 2, 2026
Quick answer
Ask for the New Jersey master plumber license number and the name of the person who holds it. Then look it up on the state's license verification site at newjersey.mylicense.com, using Person Search, and check that the name and number match and the license is active.
- Difficulty
- Easy
- Time
- About 5 minutes
- You need
- A phone or computer and the license number
Rather not risk it? A licensed plumber can handle this for you, with written upfront flat-rate pricing options before any work starts.
Anyone can call themselves a plumber on a website or the side of a van. In New Jersey you can check for yourself in about five minutes, and it's worth doing before someone opens up a wall or works on a gas line.
How to check a plumber's license
Step 1: Ask for the license number and the name on it
Ask for the New Jersey master plumber license number and the name of the person who holds it. You need the person's name because a company name alone may not bring up the license. A good company gives you both right away. Ours is NJ Master Plumber Lic. #36BI01345600.
Step 2: Open the state's verification site
Go to newjersey.mylicense.com/verification. The New Jersey Division of Consumer Affairs runs it, and the state says it shows the most current license information.
Step 3: Choose Person Search
The site asks you to pick Business Search or Person Search. Choose Person Search, because master plumbers aren't on the state's list of business licenses. Then search with the details you were given.
Step 4: Check the result
Make sure the name and number match what you were told, and that the license shows as active. If it lists an expiration date, check that too.
Step 5: Ask if something doesn't match
Typos happen, so ask the company to confirm the spelling and the number. If it still doesn't match, or they get vague about it, call the State Board of Examiners of Master Plumbers. Its contact details are on the board's page.
What the license tells you
In New Jersey, plumbing work for hire has to be done by or under a licensed master plumber, and the master plumber applies for any permit. So the person at your house may not hold the license themselves, and that's normal. Ask whose license covers your job. Our guide to NJ plumbing codes and permits explains when a permit is needed.
A license is only the first check. Our guide to finding an honest plumber covers what to ask about pricing and how to read reviews.
Get tips and reminders
New guides and seasonal reminders. A few emails a year.
Stop and call us if
- You need a licensed plumber in Central New Jersey. Contact us to confirm whether your job site is within our current service area.
- You want to look up our license first. It's NJ Master Plumber Lic. #36BI01345600.
Call 908-873-6686.
Michael Holt
Owner and operator of Plumbing Doctor, NJ Master Plumber (Lic. #36BI01345600) and U.S. Marine Corps veteran.
More about Mike
