Plumber license in New Hampshire

Application requirements

Working as a plumber in New Hampshire typically requires submitting an application packet to the New Hampshire Board of Plumbers (OPLC) — including proof of experience, exam scores, and insurance.

• Proof of relevant trade experience or apprenticeship hours
• Passing score on the state trade exam(s)
• General liability insurance + workers' comp
• Surety bond filed with the board (when required)
• Business entity registration with the Secretary of State
• Background check + license fee submitted with packet

This is the standard packet most U.S. state boards require. Verify the exact list with the New Hampshire Board of Plumbers (OPLC) before applying — requirements change by trade classification.

Fees and renewal cycle

Total cost to become a licensed plumber in New Hampshire ranges from $175 to $7,500 (typical $1,300). The range covers application + exam fees, bond + insurance premiums, and the first year of business registration.

Most state boards renew on a 1-3 year cycle and require continuing education credits. Verify the exact renewal window and CE requirement with the New Hampshire Board of Plumbers (OPLC) — late renewal typically triggers a reinstatement fee.

Reciprocity with neighboring states

New Hampshire borders 3 other launched states ProFix Directory tracks. Reciprocity is set by each state board individually — check the destination state for the current rule before relying on it.

• Plumber license in Maine →
• Plumber license in Massachusetts →
• Plumber license in Vermont →

Where to apply

Why ProFix verifies every plumber

Every pro we list in New Hampshire is matched against the New Hampshire Board of Plumbers (OPLC) record, the Secretary of State business registry, and OSHA inspection data. We surface license status, revocation history, and bond filings on every profile so homeowners can shortlist verified pros without trusting a single review-platform score.

See the full verification methodology →

Common questions

Do I need a plumber license in New Hampshire?

New Hampshire requires plumber contractors to hold a New Hampshire Plumber license from the New Hampshire Board of Plumbers (OPLC). Apply through https://www.oplc.nh.gov/board-plumbers with a typical $1,300 total fee (range $175-$7,500) and a 1-3 year renewal cycle. Verify the exact classification with the board before submitting.

Which board handles plumber licensing in New Hampshire?

New Hampshire Board of Plumbers (OPLC) is the relevant authority shown in the New Hampshire licensing seed for this page. The verification or application URL in the loader is https://www.oplc.nh.gov/board-plumbers.

How much does a plumber license cost in New Hampshire?

The recorded licensing cost range is $175-$7,500, with a typical total around $1,300. That range comes from the page loader and covers application, exam, bond, insurance, or registration costs where they apply.

What requirements should New Hampshire plumber applicants verify?

New Hampshire does not license general contractors at the state level but licenses electricians, plumbers, and gas fitters through the Office of Professional Licensure and Certification (OPLC). Home improvement contractors are not registered statewide.

Are NH plumbers licensed?

Yes. The Board of Plumbers (OPLC) licenses Apprentice, Journeyman, and Master plumbers.