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How do you check a contractor license in New Hampshire?

New Hampshire issues state licenses to electricians, plumbers and fuel gas fitters, and each plumbing or gas license names its specialty. Ask to see the license or the electrician's certificate; for other home work, ask your town or city what it requires.

Source: New Hampshire Revised Statutes Annotated, chapter 319-C (Electricians), read 22 October 2026.
Source: New Hampshire Revised Statutes Annotated, chapter 153 (mechanical licensing: plumbers and fuel gas fitters), read 22 October 2026.

The license lookup is yours to run on the state's site.

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By InstaBids editorial team with AI research agents. Sources last read: 22 October 2026

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Key facts

Who licenses electricians, plumbers and gas fitters in New Hampshire?

The state's Revised Statutes, as published by the General Court, answer for these three trades. Chapter 319-C, section 319-C:1, opens: "No electrician installation shall be made for compensation, unless made by an electrician or other person licensed by the office of professional licensure and certification, except as provided in this chapter."

Source: New Hampshire Revised Statutes Annotated, chapter 319-C (Electricians), read 22 October 2026.

For plumbing and gas work, section 153:29 has the mechanical licensing board set "the nature of the examinations required for issuance of fuel gas fitter licenses and plumbers licenses."

Source: New Hampshire Revised Statutes Annotated, chapter 153 (mechanical licensing: plumbers and fuel gas fitters), read 22 October 2026.

Section 153:28 adds: "The office of professional licensure and certification shall assist and support the board in administering and enforcing the provisions of this subdivision."

Source: New Hampshire Revised Statutes Annotated, chapter 153 (mechanical licensing: plumbers and fuel gas fitters), read 22 October 2026.

The chapter's definitions spell out who counts as a gas fitter: “"Fuel gas fitter" means a hearth system installation and service technician, a domestic appliance technician, a fuel gas installation technician, a fuel gas service technician, or a fuel gas piping installer regulated by this subdivision.”

Source: New Hampshire Revised Statutes Annotated, chapter 153 (mechanical licensing: plumbers and fuel gas fitters), read 22 October 2026.

How can you see a plumbing or gas license in New Hampshire?

Ask the contractor for it. Section 153:29 reads: "The license issued shall be available for inspection on request."

Source: New Hampshire Revised Statutes Annotated, chapter 153 (mechanical licensing: plumbers and fuel gas fitters), read 22 October 2026.

Each license names a specialty. The same section reads: "Each license issued by the office shall identify which of the following special licenses or license endorsements apply to the licensee:" Its list runs from hearth system installation and service technician through master, journeyman and apprentice plumber.

Source: New Hampshire Revised Statutes Annotated, chapter 153 (mechanical licensing: plumbers and fuel gas fitters), read 22 October 2026.

The specialty matters for your job, because the section adds: "No licensee shall engage in any activity not covered by his or her specialty license."

Source: New Hampshire Revised Statutes Annotated, chapter 153 (mechanical licensing: plumbers and fuel gas fitters), read 22 October 2026.

Where is the record for a New Hampshire electrician?

On the certificate and in the board's record. Section 319-C:7 reads: "All persons licensed by the office shall receive a certificate which must be publicly displayed at the principal place of business of said electrician, or, if no such place of business, must be carried on his or her person and displayed at any time upon request to any electrical inspector appointed by the board under this chapter, as long as said person continues in the business as herein defined."

Source: New Hampshire Revised Statutes Annotated, chapter 319-C (Electricians), read 22 October 2026.

On the record itself, section 319-C:13 reads: "The board shall keep a record of the name and residence of all persons licensed under this chapter in accordance with the retention policy established by the office of professional licensure and certification, and said record or duplicate thereof shall be open for inspection during office hours."

Source: New Hampshire Revised Statutes Annotated, chapter 319-C (Electricians), read 22 October 2026.

When does New Hampshire not ask for a trade license?

Some work falls outside the license requirements. For an owner's own home and electrical work, section 319-C:15 reads: "Nothing in this chapter shall prevent a homeowner from making electrical installations in or about a single family residence owned and occupied by him or her or to be occupied by him or her as his or her bona fide personal abode."

Source: New Hampshire Revised Statutes Annotated, chapter 319-C (Electricians), read 22 October 2026.

For gas work in an owner's own home, section 153:36 reads: "The license requirements of this subdivision shall not apply to anyone who performs fuel gas fitting within an existing single family, stand alone structure owned and occupied by the person who performs the fuel gas fitting work, and such structure is used as the individual's primary residence."

Source: New Hampshire Revised Statutes Annotated, chapter 153 (mechanical licensing: plumbers and fuel gas fitters), read 22 October 2026.

The same section lists plumbing exceptions under this lead-in: "The license requirements of this subdivision shall not apply to the following persons while performing plumbing work under the circumstances specifically described but shall apply to fuel gas fitting in the same circumstances unless otherwise exempted under this subdivision; provided, however, that plumbing installed or maintained by such persons under such circumstances shall conform to the state plumbing code:"

Source: New Hampshire Revised Statutes Annotated, chapter 153 (mechanical licensing: plumbers and fuel gas fitters), read 22 October 2026.

One of them reads: "To a property owner or the property owner's agent who installs, repairs, or replaces plumbing in the property owner's own single-family detached or townhouse residence, including new construction, or any property owner or property owner's agent who makes minor installations, repairs, or replacements to the owner's property."

Source: New Hampshire Revised Statutes Annotated, chapter 153 (mechanical licensing: plumbers and fuel gas fitters), read 22 October 2026.

Plumbing done as part of some system installs has its own exception in section 153:36: "The plumbing license requirements of this subdivision shall not apply to any person or business entity that performs plumbing in connection with the installation of any heating, cooling, air conditioning or domestic water heating systems, whether solar, oil, gas, or electric, or the installation and servicing of water treatment systems or swimming pools."

Source: New Hampshire Revised Statutes Annotated, chapter 153 (mechanical licensing: plumbers and fuel gas fitters), read 22 October 2026.

What should you ask a New Hampshire contractor before you hire?

For electrical, plumbing or gas work, ask to see the license or certificate and the specialty it names; for anything else, start with your town or city. These are practical suggestions, not rules from the statutes.

Source: New Hampshire Revised Statutes Annotated, chapter 153 (mechanical licensing: plumbers and fuel gas fitters), read 22 October 2026.
Source: New Hampshire Revised Statutes Annotated, chapter 319-C (Electricians), read 22 October 2026.

  1. For plumbing or gas work, ask to see the license; section 153:29 on inspection on request is quoted above.

    Source: New Hampshire Revised Statutes Annotated, chapter 153 (mechanical licensing: plumbers and fuel gas fitters), read 22 October 2026.

  2. Read the specialty on that license and compare it with your job, since section 153:29 says: "No licensee shall engage in any activity not covered by his or her specialty license."

    Source: New Hampshire Revised Statutes Annotated, chapter 153 (mechanical licensing: plumbers and fuel gas fitters), read 22 October 2026.

  3. For electrical work, ask to see the electrician's certificate described in section 319-C:7 (quoted above).

    Source: New Hampshire Revised Statutes Annotated, chapter 319-C (Electricians), read 22 October 2026.

  4. Ask your town or city building department what it requires. On plumbing and gas work, section 153:35 says the board's rules "may be enforced by the building inspection department or by any officer designated by the administrative authority of the city or town."

    Source: New Hampshire Revised Statutes Annotated, chapter 153 (mechanical licensing: plumbers and fuel gas fitters), read 22 October 2026.

Who sees your contact details when you post a job on InstaBids?

One point about InstaBids follows. Contact details stay hidden until the homeowner picks a contractor and they confirm the connection.

Source: InstaBids process and privacy, live-page excerpts, read 22 October 2026.

Post your job on InstaBids, and contractors can bid in writing on one written scope.

Homeowners anywhere in the US can post a job; once you send it, InstaBids finds contractors to bid on it.

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