Colorado Contractor Guide

Licensing in Colorado

The average home improvement project in Colorado runs about $38,000. That's close to the roughly $35,540 national average project cost. That's the 15th-highest average project cost of the 50 states. Colorado has no statewide contractor license, so vetting falls entirely on you: check local city or county licensing (many require it even where the state doesn't), get references, and confirm insurance directly. The most common projects here are Roof replacement (hail damage), Basement finish and Window replacement. Colorado has no statewide contractor license. Cities and counties regulate locally. Denver requires a city license for most work.

Licensing body: City/county level only — Denver, Aurora, etc. have local licensing

How to Vet and Pay a Contractor Safely

Get at least three written bids for anything over a couple thousand dollars — a bid that's dramatically lower than the others is a red flag, not a deal. Never pay more than 10–30% upfront (many states cap deposits by law); the rest should follow a payment schedule tied to inspected milestones, with the final payment held until the work passes a final walkthrough. Confirm the contractor carries general liability and workers' comp insurance — ask for a certificate naming you, not just their word for it — and get every change order in writing before the work starts, not after. For structural, electrical, or plumbing work, confirm your contractor is pulling the required permits — unpermitted work can complicate a future sale and may not be covered by insurance if something goes wrong.