Colorado licenses contractors through the Department of Regulatory Agencies (DORA), which regulates a huge range of professions statewide. Within that, 'EC' (Electrical Contractor) and 'PC' (Plumbing Contractor) are real, distinct, business-level license types — genuine tested credentials, confirmed against DORA's own published records.
Here's the important gap to know about if you're hiring in Colorado: there is no statewide general-contractor license and no statewide HVAC/mechanical trade license at all. General contracting and HVAC work in Colorado are regulated locally, at the city or county level, not by the state — which is exactly why this site only has electrical and plumbing listings for Colorado, not the full four-trade coverage some other states have. It's not a data gap on this site's end; the statewide license this site's data model requires genuinely doesn't exist for those two trades in Colorado.
If you need an HVAC contractor or a general/roofing contractor in Colorado, your city or county building department is the right place to check licensing requirements and verify a specific business — requirements and even whether a license is required at all can vary meaningfully between, say, Denver and a smaller municipality.
For the trades Colorado does license statewide, DORA's data is fully live and automated, covering both electrical and plumbing contractors. One data limitation worth knowing: DORA doesn't publish street addresses for these license types, only city and ZIP code — which is why Colorado listings on this site don't include a map embed the way most other states' listings do. The license and city-level location are still accurate; the site simply can't show a precise map pin without a real address on file.
Status categories work the same as elsewhere — active, expired, revoked, pending — reflecting DORA's current records as of the last data refresh. To verify directly, DORA maintains its own license lookup tool searchable by name or license number.
A practical note for Colorado homeowners: since electrical and plumbing carry real statewide-tested licenses here, that's exactly where a license check adds the most value. For general contracting or HVAC work, since there's no equivalent statewide credential, references, local reputation, and your city's own permitting/licensing rules matter more than they would in a state with a unified statewide system.