Does Denver issue its own contractor licenses?

Yes. Denver licenses certain trades at the city level rather than (or in addition to) the Colorado state board. TradesAPI verifies Denver municipal licenses through the same GET /verify endpoint, passing city=denver alongside the state.

How do I verify a Denver contractor license?

Call TradesAPI's GET /verify with state=CO, city=denver, and the license number to get a normalized result — valid/invalid, status, and expiration — in one request, or search the city portal by hand.

What Denver trades can I verify?

TradesAPI covers these Denver trade types today: Electrical, General Contractor, HVAC, Plumbing.

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Denver, Colorado · contractor license lookup

How to verify a contractor license in Denver, Colorado

Check any Denver contractor license — status and expiration — through one normalized API, or look it up by hand on the city licensing portal. Denver licenses trades at the city level, not just the Colorado state board.

Denver coverage: Operational · live status

What you can verify

Data source: Official Denver licensing portal

Jurisdiction: Denver (municipal), Colorado

Trade types

Electrical General Contractor HVAC Plumbing

Looking for the Colorado state board instead? See the Colorado contractor license guide.

One call. State and city licenses, same schema.

The /verify response is identical in shape whether the license is issued by a state board or a city — add the city parameter and your integration code stays the same:

GET /verify?state=CO&city=denver&license=SAMPLE-12345&trade=electrical

{
  "valid": true,
  "name": "SAMPLE CONTRACTING LLC",
  "license_number": "SAMPLE-12345",
  "trade": "electrical",
  "expiration": "05/12/2027",
  "status": "Active",
  "state": "CO",
  "disciplinary_actions": [],
  "source_url": "https://aca-prod.accela.com/DENVER/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO",
  "cached": false,
  "checked_at": "2026-07-21T06:00:00Z"
}

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

Verify Denver licenses programmatically

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

The official Denver licensing portal is at https://aca-prod.accela.com/DENVER/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO — free to search by hand. TradesAPI wraps it in the same /verify call you use for every state, so city and state licenses come back in one normalized schema.

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Frequently asked questions

Does Denver issue its own contractor licenses?: Yes. Denver licenses certain trades at the city level rather than (or in addition to) the Colorado state board. TradesAPI verifies Denver municipal licenses through the same GET /verify endpoint, passing city=denver alongside the state.
How do I verify a Denver contractor license?: Call TradesAPI's GET /verify with state=CO, city=denver, and the license number to get a normalized result — valid/invalid, status, and expiration — in one request, or search the city portal by hand.
What Denver trades can I verify?: TradesAPI covers these Denver trade types today: Electrical, General Contractor, HVAC, Plumbing.