Contractor license guide
No statewide license or registration for general contractors, remodelers or home improvement contractors could be confirmed on an official New Hampshire page. The state does license trades: electricians through the Electricians' Board and plumbers, fuel gas fitters and heating equipment installers through the Mechanical Licensing Board, both within the Office of Professional Licensure and Certification (OPLC). State law (RSA 359-G) also sets a notice-and-repair process for residential construction defect claims.
Statewide license
Not confirmed
Last checked
October 16, 2026
Plain-English summary of official sources. Rules and fees change, so confirm with the licensing office before you apply. This guide isn't legal advice.
Electricians and electrical businesses (corporations, LLCs and partnerships).
Plumbers, fuel gas fitters and heating equipment installers or service people.
Under RSA 359-G, a homeowner with a construction defect claim against a contractor (including contractors who modify or repair existing homes) must give written notice at least 60 days before suing. The contractor has 30 days to respond in writing by offering to settle or repair, proposing an inspection, or rejecting the claim. After an inspection, the contractor has 15 days to make a repair or money offer, and the homeowner has up to 30 days to accept.
Electricians are licensed by the Electricians' Board. Plumbers, fuel gas fitters and heating equipment installers fall under the Mechanical Licensing Board. Both are within the Office of Professional Licensure and Certification.
Unlicensed electrical work is a misdemeanor for an individual and a felony for any other person, such as a business (RSA 319-C:15). Penalties for unlicensed general contracting were not found.
We couldn't confirm these on an official page when we checked. Ask the licensing office before you rely on them:
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