How to Verify a Colorado Radon License
Anyone paid to test or mitigate radon in Colorado Springs, or anywhere in Colorado, must hold a state license. That has been the law since July 1, 2022, when licensure created by House Bill 21-1195 took effect under the Department of Regulatory Agencies' Division of Professions and Occupations. This guide shows you how to check any contractor in under a minute, whether you found them through this site or anywhere else. We recommend the check every time, including for contractors we connect you with.
What Colorado requires
Colorado issues two radon credentials, per DORA's Office of Radon Professionals: the Radon Measurement Professional license for people who place and retrieve testing devices for hire, and the Radon Mitigation Professional license for people who design and install radon reduction systems. Licenses expire on May 31 every year, so status and dates both matter. The state's announcement of the licensure requirement is a compact primary-source summary.
The one-minute check, step by step
- 1
Open the DORA license lookup
The Department of Regulatory Agencies runs the official search for every licensed profession in Colorado, radon included. No account is needed.
- 2
Search the name or business
Enter the individual or company name. Radon credentials appear as Radon Measurement Professional or Radon Mitigation Professional license types.
- 3
Check the status and expiration
You want an active status. Colorado radon licenses expire on May 31 every year and must be renewed, so a lapsed date matters even for a familiar name.
- 4
Match the license to the work
Testing for hire requires the measurement license; installing systems requires the mitigation license. A firm doing both should hold both, or staff both.
- 5
Cross-check NRPP certification
The National Radon Proficiency Program is the national certification layer behind most state licensing. Its directory and verification tools add a second, independent confirmation.
Three questions to ask before hiring
- May I see your current Colorado radon license number?
- Is the person doing the work the licensed individual?
- Will you retest after installation to confirm the reading dropped?
A licensed professional answers all three without friction. Hesitation on any of them is your cue to keep shopping; the Pikes Peak region has dozens of licensed radon professionals, and the NRPP directory lists the nationally certified ones by location.
Where this fits in the bigger decision
The license check is step one of a sound hire. Step two is a written quote naming suction points, vent route, fan model, sealing, retest, and warranty, explained on our radon mitigation page. Step three is comparing bids; what state sources publish about typical costs is collected in the cost guide. When you request a quote through this site, the request goes to an independent contractor holding a current Colorado license serving El Paso or Teller County, and this page is how you hold us to that.