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How to verify a contractor license in New Hampshire

Check any New Hampshire contractor license — status, expiration, and disciplinary history — through one normalized API, or look it up by hand on the state board portal.

What you can verify

Data source: Live portal scrape (OPLC)

Coverage: Electricians, Plumbers (no state GC)

Trade types

One call. The whole picture.

The /verify response is identical in shape across every state, so your integration code never changes per jurisdiction:

{
  "valid": true,
  "name": "SAMPLE CONTRACTING LLC",
  "license_number": "SAMPLE-12345",
  "trade": "electrical",
  "expiration": "05/12/2027",
  "status": "Active",
  "state": "NH",
  "disciplinary_actions": [],
  "source_url": "https://forms.nh.gov/licenseverification/Search.aspx",
  "cached": false,
  "checked_at": "2026-06-22T05:14:00Z"
}

Example response showing the normalized schema. Wire it up against deterministic fixtures in the sandbox — no credit cost.

Verify New Hampshire licenses programmatically

# Verify a New Hampshire contractor license with one API call
curl -H "X-API-Key: YOUR_KEY" \
  "https://www.tradesapi.com/verify?state=NH&license=SAMPLE-12345&trade=electrical"

The official New Hampshire board portal is at https://forms.nh.gov/licenseverification/Search.aspx — free to search by hand. TradesAPI wraps it (and every other state) in one API so you don't maintain 51 different scrapers.

Frequently asked questions

How do I verify a contractor license in New Hampshire?

You can search the official New Hampshire board portal by hand, or call TradesAPI's GET /verify endpoint with the state, license number, and trade to get back a normalized result — valid/invalid, status, expiration, and any disciplinary actions — in one request.

What contractor trades does New Hampshire license?

TradesAPI covers these New Hampshire trade types today: Electrical, Plumbing.

Is New Hampshire contractor license data free to check?

The New Hampshire board's public portal is free to search manually. TradesAPI adds a single normalized API across all 50 states plus DC — every new API key includes 50 free verifications.