Plumbers in Denver, CO

Compare 100 plumbers in Denver by HomeProFax Score v2 (license, discipline, permits, BBB + HomeProFax reviews). Always verify license status with the issuing board before hiring.

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Plumbers in Denver: what the records show

Denver has 1,964 plumbing license holders in our DORA data, and 879 are active. 257 of them are active plumbing contractor registrations, the businesses that can contract plumbing work with you directly. 65 Denver plumbing records carry a board discipline flag.

Shortcut: ask any Denver contractor for their verified HomeProFax report. See all Denver contractor data.

How to hire in Denver

Check the license is active, look at permit history for jobs like yours, read the BBB and HomeProFax review components in the score breakdown, and use the outbound Google/BBB links on each profile to cross-check external reviews (we link out — we do not store Angi, Yelp or Google ratings).

By the numbers

Counts are HomeProFax profiles with a Denver address, from the DORA plumbing roster (refreshed Oct 21, 2026) and Denver and Boulder open permit data.

How plumbing licensing works in Denver

Plumbers in Colorado are licensed by the DORA State Plumbing Board. The board licenses individuals (master, journeyman and residential plumbers) and registers plumbing contractors, the businesses that offer plumbing work to the public. The license comes from the state; Denver issues the permits and does the inspections.

Of our 1,940 Denver plumber profiles, 879 are journeyman plumbers, 504 are master plumbers, 416 are plumbing contractors and 128 are residential plumbers. A residential plumber license covers one- to four-family homes up to two stories above ground, so for a commercial or larger building, look for a master or journeyman plumber on the company.

Water heater swaps, re-pipes and sewer line work usually need a permit in Denver. A plumber who regularly pulls permits leaves a record, and that record shows up on their HomeProFax report when it's in the open data we include.

What to ask for before you hire

You don't need to spend an evening on government lookup screens. Ask the plumber you're considering for their HomeProFax report. It puts the license record, any board discipline flag, permits on file and outside links on one page, with sources. A contractor with a clean record can share it in a minute. If one won't, that tells you something too.

Search any business name free on HomeProFax.com if they haven't shared it yet.

Before you sign with a Denver plumber

• Get the company name and confirm it's the business on the license, not just a person's name.
• Ask whether the job needs a permit and who pulls it. It should be the plumber, not you.
• For emergency calls, get the price in writing before work starts, even by text.

More Denver trades: electricians in Denver, general contractors, or all Denver contractors. Nearby: Aurora plumbers, Boulder plumbers. Statewide: Colorado.

Plumbers in Denver — common questions

Do plumbers need a license in Denver?

Yes. Plumbers in Colorado are licensed by the state through the DORA State Plumbing Board, and plumbing contractors register with that board. Denver issues the permits for plumbing work.

What is a residential plumber in Colorado?

A state license that covers plumbing in one- to four-family homes up to two stories above ground. Master and journeyman plumbers can work on a wider range of buildings.

How many plumbers are licensed in Denver?

HomeProFax holds 1,940 plumber profiles with a Denver address: 836 show an active DORA license and 1,082 an expired one.

What should I ask a Denver plumber before hiring?

Ask for their HomeProFax report. It shows the license record, any board discipline flag and permits on file in one place, so you don’t have to look each one up.

How many active plumbing contractors are based in Denver?

257 active plumbing contractor registrations and 879 active plumbing licenses in total have a Denver address in HomeProFax's DORA data.

How do I check if a Denver contractor is licensed?

Open any profile above to see its license status, issuing board and expiry date from public records, then verify it with the Colorado DORA State Plumbing Board, which licenses plumbers statewide, before you hire. You can also search a business name or license number on HomeProFax.

How many plumbers are listed in Denver?

This page lists 100 plumbers in Denver, ranked by HomeProFax Score v2.

What does the HomeProFax score mean?

The score (0-100) sums license status (35), discipline and legal flags (20), permit history (20), and BBB plus HomeProFax homeowner reviews (25). It is not a rating of workmanship. See how scores work.