Verify a contractor license, in any state

Pick a state to learn how to look up and verify a contractor license (status, expiration, and disciplinary history) by hand on the state board or through one normalized API that covers all 50 states plus DC.

New to the API? Start with how to verify a contractor license via API for the request, the response shape, and a runnable example.

Browse by trade

Jump straight to every state that licenses a given trade:

Electrical Contractor General Contractor HVAC Contractor Plumbing Contractor

City-level licensing

Some trades are licensed by the city, not the state board. We cover these municipal licensing boards under the same normalized schema:

Atlanta, GA Chicago, IL Columbus, OH Dallas, TX Denver, CO Detroit, MI El Paso, TX Indianapolis, IN Jacksonville, FL Las Vegas, NV Los Angeles, CA Nashville, TN New York City, NY Philadelphia, PA San Antonio, TX Seattle, WA

One API for every state

Stop maintaining 51 different portal scrapers. Every new API key includes 50 free verifications, plus hosted MCP access for AI agents.

Start free → Read the API docs →