Garage door rules & licensing in New Hampshire

No state contractor licensing board. Home-improvement contractor conduct is handled by the New Hampshire Department of Justice, Consumer Protection and Antitrust Bureau (hotline 1-888-468-4454). — official site

No state contractor licence. The NH Attorney General's own consumer alert states plainly: "In New Hampshire, contractors do not need to be licensed, and fraudsters may represent themselves to be reputable contractors in order to take homeowners' money." The AG advises consumers to ask each contractor for proof of insurance and to always have a written contract with a detailed scope of work, materials, total price and payment schedule before any work or payment. Note that NH does separately license some trades (e.g. electricians, plumbers/gas fitters) through the Office of Professional Licensure and Certification - garage door installation is not among them.

Permits are issued locally under the New Hampshire State Building Code (RSA 155-A). RSA 155-A:1 defines the state building code as adopting by reference the International Building Code 2021, International Existing Building Code 2021, International Plumbing Code 2021, International Mechanical Code 2021, International Energy Conservation Code 2018, International Swimming Pool and Spa Code 2021, International Residential Code 2021 (all published by the International Code Council) and the National Electrical Code 2023, together with all amendments reviewed and approved by the State Building Code Review Board as of April 11, 2025 and ratified by the legislature.