1 credentialed Colorado radon professional serving Gunnison, sourced from the Colorado DORA credential rosters and cross-checked against each company's own site. Filter by what you actually need — a mitigation install, a test, or both.
Credential check: every Gunnison-based contractor below is on a Colorado DORA radon roster (number and roster date on each card). That means they're allowed to do the work, not that they do it well. Check a Colorado license yourself →
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1 · credentialed, phone-only — no negative evidence, just nothing to link
Hearth Design Build
MitigationTesting
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No confirmed website found — no negative evidence, just nothing to link.
Mitigation cert RMT-168 (Colorado DORA Office of Radon Professionals licensee roster (RMT), 2026-10-02) · Testing cert RME-419 (Colorado DORA Office of Radon Professionals licensee roster (RME), 2026-10-02)
Does a radon contractor need a license in Colorado?
Yes. Since July 1, 2022, all radon measurement and mitigation in Colorado must be done by a professional licensed through DORA's Office of Radon Professionals. Measurement licenses start RME- and mitigation licenses start RMT-.