How to get a plumbing license in New Hampshire
Edited by John Voll. Last verified .
New Hampshire Mechanical Licensing Board (Office of Professional Licensure and Certification) licenses plumbing contractors in New Hampshire.
Who licenses plumbing work in New Hampshire
| Credential | State license |
|---|---|
| Board | New Hampshire Mechanical Licensing Board (Office of Professional Licensure and Certification) official statement |
| Official lookup | Search plumbing licenses |
| License types | Master plumber, Journeyman plumber, Apprentice plumber, Mechanical business entity license |
How to get licensed
- Apply to Office of Professional Licensure and Certification for a credential such as Master plumber, Journeyman plumber or Apprentice plumber.
- Yes, an exam set by the Mechanical Licensing Board is required for plumber and fuel gas fitter licenses. source
- Experience: master plumber: at least 6 months holding a New Hampshire journeyman plumber license; journeyman: a US Department of Labor or sponsor apprenticeship completion certificate, at least 600 hours of educational training and at least 8,000 working hours of on-the-job experience, or prior journeyman licensure in another state plus the exam (Mec 305.01, effective 2-13-26). source
- Carry A licensed plumbing or fuel gas business entity must show proof of liability insurance; the statute sets no minimum amount. source
- Pay the master plumber license, 2 years, $330 (initial, renewal or reinstatement): $330. source
- Licenses are valid for 2 years from the date of issuance. source
Plumbing requirements in New Hampshire
| Exam | Yes, an exam set by the Mechanical Licensing Board is required for plumber and fuel gas fitter license. source |
|---|---|
| Experience | Master plumber: at least 6 months holding a New Hampshire journeyman plumber license; journeyman: a US Department of Labor or sponsor apprenticeship completion certificate, at least 600 hours of educational training and at least 8,000 working hours of on-the-job experience, or prior journeyman licensure in another state plus the exam (Mec 305.01, effective 2-13-26). source |
| Bond | Not found on an official source. |
| Insurance | A licensed plumbing or fuel gas business entity must show proof of liability insurance; the statute sets no minimum amount. source |
| Renewal | Licenses are valid for 2 years from the date of issuance. source |
| Reciprocity | Reciprocity is available only with states that have a mutual mechanical licensing reciprocity agreement with New Hampshire; the statute does not name the state. source |
| Fees |
|
Hiring a plumbing contractor?
See every official lookup in New Hampshire, which board covers which trade, and what to check before you hire.
Questions
- Do you need a plumbing license in New Hampshire?
- New Hampshire Mechanical Licensing Board (Office of Professional Licensure and Certification) licenses plumbing contractors in New Hampshire.
- How do I check a plumbing license in New Hampshire?
- The New Hampshire Mechanical Licensing Board (Office of Professional Licensure and Certification) keeps the record for plumbing contractors in New Hampshire. Use the official lookup on this page, and treat the board's own record as final.
- How much does a plumbing license cost in New Hampshire?
- Master plumber license, 2 years, $330 (initial, renewal or reinstatement). Journeyman plumber license, 2 years, $198. Apprentice plumber license, 2 years, $88. Mechanical business entity license, 2 years, $275. Master plumber exam fee, $90. Journeyman plumber exam fee, $90.
- How much experience do you need for a plumbing license in New Hampshire?
- Master plumber: at least 6 months holding a New Hampshire journeyman plumber license; journeyman: a US Department of Labor or sponsor apprenticeship completion certificate, at least 600 hours of educational training and at least 8,000 working hours of on-the-job experience, or prior journeyman licensure in another state plus the exam (Mec 305.01, effective 2-13-26).
- How often does a plumbing license renew in New Hampshire?
- Licenses are valid for 2 years from the date of issuance.
Other trades in New Hampshire
- General contractor license in New Hampshire
- Electrical license in New Hampshire
- HVAC license in New Hampshire
- Roofing license in New Hampshire
- All New Hampshire trades
Plumbing license in other states
- Alabama
- Alaska
- Arizona
- Arkansas
- California
- Colorado
- Connecticut
- Delaware
- Florida
- Georgia
- Hawaii
- Idaho
- Illinois
- Indiana
- Iowa
- Kansas
- Kentucky
- Louisiana
- Maine
- Maryland
- Massachusetts
- Michigan
- Minnesota
- Mississippi
- Missouri
- Montana
- Nebraska
- Nevada
- New Jersey
- New Mexico
- New York
- North Carolina
- North Dakota
- Ohio
- Oklahoma
- Oregon
- Pennsylvania
- Rhode Island
- South Carolina
- South Dakota
- Tennessee
- Texas
- Utah
- Vermont
- Virginia
- Washington
- West Virginia
- Wisconsin
- Wyoming
Sources
- https://www.oplc.nh.gov/find-board/mechanical-licensing-board
- https://forms.nh.gov/licenseverification/
- https://gc.nh.gov/rsa/html/XII/153/153-mrg.htm
- https://gc.nh.gov/rules/state_agencies/mec300.html
- https://gc.nh.gov/rsa/html/XXX/310/310-mrg.htm
- https://gc.nh.gov/rules/state_agencies/plc1000.html
This is not a government site. The licensing board's own record governs; always confirm on the official lookup. Information as of October 6, 2026.