Is My Contractor Licensed in New Hampshire?
Quick answer
New Hampshire licenses plumbers, fuel gas fitters and electricians through boards administered by the Office of Professional Licensure and Certification (OPLC). The state does not license general home contractors, so roofing, garage door and restoration companies have no statewide contractor license. Plumbers: Mechanical Licensing Board (NH Office of Professional Licensure and Certification). Electricians: Electricians' Board (NH Office of Professional Licensure and Certification). HVAC (heating and air): Mechanical Licensing Board (NH Office of Professional Licensure and Certification). Roofers: No statewide license.
Checked September 30, 2026. Every rule below links to the official source; licensing rules change, so confirm with the board before you hire.
Plumbers in New Hampshire
Licensed by: Mechanical Licensing Board (NH Office of Professional Licensure and Certification)
Plumbers in New Hampshire are licensed by the Mechanical Licensing Board as trainees, journeymen or master plumbers, and plumbing business entities are also regulated. You can check a plumber's license with the OPLC license search.
Look up a license · Source: Mechanical Licensing Board - NH Office of Professional Licensure and Certification · 2 plumbing companies in New Hampshire on 1-800Deals
Electricians in New Hampshire
Licensed by: Electricians' Board (NH Office of Professional Licensure and Certification)
The Electricians' Board licenses apprentice, journeyman, master and high/medium voltage electricians, and an active New Hampshire electrician license is required to work with 30 volts or higher. Check an electrician's license with the OPLC license search.
Look up a license · Source: Electricians' Board - NH Office of Professional Licensure and Certification · 1 electricians company in New Hampshire on 1-800Deals
HVAC (heating and air) in New Hampshire
Licensed by: Mechanical Licensing Board (NH Office of Professional Licensure and Certification)
New Hampshire licenses fuel gas fitters (installation, service, piping, domestic appliance and hearth system categories) through the Mechanical Licensing Board, while certification for oil heating technicians is voluntary. The board's list of regulated trades does not include a general HVAC contractor license, so ask what license covers the specific work, such as gas piping or electrical wiring. Check gas fitter and oil technician credentials with the OPLC license search.
Look up a license · Source: Mechanical Licensing Board - NH Office of Professional Licensure and Certification · 1 hvac company in New Hampshire on 1-800Deals
Roofers in New Hampshire
Licensed by: No statewide license
New Hampshire does not license home contractors, so roofers do not hold a state contractor license. The NH Attorney General advises homeowners to check references and verify any claims of licensure and insurance, and to confirm an insurance policy with the insurer before signing a contract.
Pest control in New Hampshire
Licensed by: NH Department of Agriculture, Markets and Food, Division of Pesticide Control
The Division of Pesticide Control licenses commercial pesticide applicators, and licensed applicators must earn education credits over a five-year period to keep their license current. The Division does not post an online license search on its licensing page, so ask the company for its applicator license and contact the Division to confirm it.
Source: Pesticide Licensing - NH Department of Agriculture, Markets, and Food · 4 pest control companies in New Hampshire on 1-800Deals
Garage door companies in New Hampshire
Licensed by: No statewide license
New Hampshire does not license home contractors, so garage door installers do not need a state contractor license. The NH Attorney General advises checking references and verifying any claims of licensure and insurance. Ask for proof of insurance and confirm it with the insurer.
Source: NH Department of Justice - Local Contractor Admits Violation of the Consumer Protection Act by Falsely Claiming He Was Licensed and Insured · 1 garage doors company in New Hampshire on 1-800Deals
Water damage restoration in New Hampshire
Licensed by: No statewide license
New Hampshire does not license home contractors, and there is no state license for water damage restoration companies. The NH Attorney General advises checking references and verifying any claims of licensure and insurance. Ask for proof of insurance and confirm it with the insurer before work starts.
Source: NH Department of Justice - Local Contractor Admits Violation of the Consumer Protection Act by Falsely Claiming He Was Licensed and Insured · 17 water damage restoration companies in New Hampshire on 1-800Deals
Frequently asked questions
Does New Hampshire license general contractors or roofers?
No. New Hampshire does not license home contractors, so roofers, garage door installers and restoration companies have no state contractor license. Plumbers, gas fitters and electricians are licensed by the state.
How do I check a plumber's or electrician's license in New Hampshire?
Use the Office of Professional Licensure and Certification license search. Plumbers and gas fitters are licensed by the Mechanical Licensing Board, and electricians by the Electricians' Board.
Can I do my own plumbing or electrical work in New Hampshire?
State law lets a homeowner do electrical work in a single-family home they own and live in, and lets a property owner do plumbing in their own single-family home or townhouse. Electrical installations made for pay must be done by a licensed electrician.
This page is general information, not legal advice. 1-800Deals does not license, verify or endorse contractors. See all states: contractor licensing by state.