Contractors in Denver, CO

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The Denver contractor picture

The Denver file in our Colorado data runs to 7,151 contractor profiles, 1st among all cities in the state, and electrical licenses are the largest group. Municipal licensing fills the gap left by the state: Denver contractors show up 1,850 times on the Aurora (856), Arvada (651), Thornton (342) and Lafayette, CO (Mechanical Contractor) per BuildZoom verification (April 2026); no Colorado DORA state plumbing/electrical contractor license number found in searched sources (1) lists, with 216 roofing licenses, 472 general contractor licenses and 211 HVAC/mechanical licenses.

By trade, the DORA records give Denver 4,246 electrical licenses (504 masters, 2,158 journeymen, 430 residential wiremen) plus 1,964 plumbing licenses (504 masters, 879 journeymen). That is the 1st-largest electrical workforce in our Colorado data. 4,603 profiles are individual license holders rather than companies. The company on your contract should be one of the 402 active electrical or 257 active plumbing contractors, or a registered firm from a nearby city. Board discipline: 206 Denver records have a DORA discipline flag (138 electrical, 65 plumbing, 2 other, 1 general). 122 belong to licenses that are still active, so a current license alone doesn't rule out past discipline.

About 51% are active, in line with the 54% we see statewide, and 3,387 records have lapsed. We matched 142 Denver companies to Colorado Secretary of State filings: 82 in good standing and 60 delinquent or dissolved. A dissolved entity can't back a warranty, so check the status before you sign.

Experience runs deep: half of the licensed pros here were first licensed in 2001 or earlier, and 354 active licenses date from before 2000. 600 are new since 2024. The busiest ZIP codes are 80221 (695), 80219 (669), 80223 (378), and 73 ZIPs are represented in total.

6,751 permits from City of Boulder and Denver open data trace back to 154 contractors based in Denver. The leaders are Complete Basement Systems (688), Applewood Plumbing Heating & Electric (550), Tuff Shed (525). The newest is dated 2026-10-16, and at least 325 were issued in the past year. Most are alteration/tenant finish (563), electrical permit (425), mechanical permit (391).

Permit data: City and County of Denver Open Data Catalog, licensed under CC BY 3.0. HomeProFax matched permits to licensed contractors by name; data modified from the original. Not endorsed by the City and County of Denver.

HomeProFax profiles with a Denver address, built from DORA electrical and plumbing rosters, the Aurora, Arvada and Thornton contractor license lists, Colorado Secretary of State filings and Boulder/Denver open permit data. Counts as of Oct 24, 2026.

Shortcut: before you hire, ask any Denver contractor for their verified HomeProFax report. A contractor with a clean record can share it in a minute.

Denver licensing rules, with sources

Local authority: Denver Community Planning and Development. What we verified on official pages (Oct 2026):

• Denver's Community Planning and Development issues contractor licenses and does not accept or reciprocate licenses from other counties or states. (source)
• A Denver contractor license starts with a supervisor certificate (or employing someone who holds one). A Colorado electrical or plumbing license substitutes for the supervisor certificate. (source)
• Denver licenses renew every one to three years depending on type. Some owner-occupier work requires a homeowner exam before a permit. Contractor Licensing: (720) 865-2770. (source)

Electricians and plumbers are also licensed statewide by the DORA State Electrical Board and the DORA State Plumbing Board. Rules and fees change, so confirm with the department before you sign.

Hail, roofs and your contract

Denver sits on the Front Range, in the heart of "Hail Alley." The Rocky Mountain Insurance Information Association says the region usually sees three or four catastrophic hailstorms a year, and the damaging season runs from mid-April to mid-September. Eight of the twelve costliest Colorado hailstorms on RMIIA's list were centered on the Denver metro, led by the May 8, 2017 storm at $2.3 billion in insured losses. After a storm, Colorado law lets you cancel an insurance-paid roofing contract within 72 hours of a written claim denial (C.R.S. 6-22-104), and a roofer may not offer to pay or waive your deductible (C.R.S. 6-22-105).

Denver contractor list

7,152 profiles, ranked by HomeProFax score (top 1,942 listed; use search for others).

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Denver contractor FAQ

How many Denver contractors does HomeProFax track?

HomeProFax lists 7,151 contractor profiles with a Denver business address. 3,654 (51%) show an active license on file and 3,387 show an expired one. 4,246 hold electrical licenses and 1,964 hold plumbing licenses.

Do contractors need a license in Denver?

Denver Community Planning and Development handles contractor licensing for Denver. Denver's Community Planning and Development issues contractor licenses and does not accept or reciprocate licenses from other counties or states. Electricians and plumbers also need Colorado DORA licenses.

Have any Denver contractors been disciplined?

206 Denver profiles carry a Colorado state board discipline flag, and 122 of those licenses are still active. Open the profile and read the board record before you hire.

Which Denver contractors have the most permits on file?

Complete Basement Systems leads with 688 permits. In total, 154 Denver-based contractors have 6,751 permits on file from the Boulder and Denver open-data portals HomeProFax covers.

Can I find licensed roofers based in Denver?

Colorado has no state roofing license, so roofers come from city license lists. 216 roofing licenses (211 active) belong to Denver-based contractors on the Aurora, Arvada and Thornton lists HomeProFax holds.

What's the fastest way to check a Denver contractor?

Ask the contractor for their verified HomeProFax report. It puts their license status, any board discipline, permits on file and Secretary of State standing on one page with sources. You can also search any business free on HomeProFax.com.