Home › Guides › General Contractor

How to verify general contractor licenses, in any state

Verify general contractor licenses — status, expiration, and disciplinary history — across 37 states plus DC through one normalized API. Pick a state below, or call /verify with the state, license number, and trade=general.

States where we verify general contractor licenses

City-level general contractor licensing

Some general contractor licenses are issued by the city, not the state board. We cover these municipal boards under the same normalized schema:

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": "general",
  "expiration": "05/12/2027",
  "status": "Active",
  "state": "AL",
  "disciplinary_actions": [],
  "source_url": "https://genconbd.alabama.gov/database-sql/roster.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.

Frequently asked questions

How do I verify General Contractor licenses?

Call TradesAPI's GET /verify with the state, license number, and trade=general to get a normalized result — valid/invalid, status, expiration, and any disciplinary actions — in one request. The same call works across all 38 covered jurisdictions.

Which states can I verify General Contractor licenses in?

TradesAPI verifies general contractor licenses in 37 states plus DC today: Alabama, Alaska, Arizona, Arkansas, California, Connecticut, Delaware, District of Columbia, Florida, Georgia, Hawaii, Illinois, Kentucky, Louisiana, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Nebraska, Nevada, New Jersey, New Mexico, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, Tennessee, Texas, Utah, Virginia, Washington, West Virginia, Wisconsin.

Is General Contractor license data free to check?

Each state board's public portal is free to search by hand. TradesAPI adds one normalized API across every covered state — every new API key includes 50 free verifications.