Protect Environmental
Mitigation Testing
Mitigation cert RMT-262, RMT-286, RMT-308, RMT-178, RMT-177, RMT-52 (Colorado DORA Office of Radon Professionals licensee roster (RMT), 2026-10-02) · Testing cert RME-436, RME-725, RME-11 (Colorado DORA Office of Radon Professionals licensee roster (RME), 2026-10-02)
Get a Free Quote Credentials & details → Access Inspection Services, Inc.
Testing
Testing cert RME-348 (Colorado DORA Office of Radon Professionals licensee roster (RME), 2026-10-02)
Get a Free Quote Credentials & details → American Radon, LLC
Mitigation
Mitigation cert RMT-68 (Colorado DORA Office of Radon Professionals licensee roster (RMT), 2026-10-02)
Get a Free Quote Credentials & details → Call Home Inspection
Testing
Testing cert RME-732 (Colorado DORA Office of Radon Professionals licensee roster (RME), 2026-10-02)
Get a Free Quote Credentials & details → Denver Radon Testing
Testing
Testing cert RME-42 (Colorado DORA Office of Radon Professionals licensee roster (RME), 2026-10-02)
Get a Free Quote Credentials & details → Evergreen Radon LLC
Mitigation Testing
Mitigation cert RMT-324 (Colorado DORA Office of Radon Professionals licensee roster (RMT), 2026-10-02) · Testing cert RME-665 (Colorado DORA Office of Radon Professionals licensee roster (RME), 2026-10-02)
Get a Free Quote Credentials & details → Goard Guards
Mitigation Testing
Mitigation cert RMT-24 (Colorado DORA Office of Radon Professionals licensee roster (RMT), 2026-10-02) · Testing cert RME-47 (Colorado DORA Office of Radon Professionals licensee roster (RME), 2026-10-02)
Get a Free Quote Credentials & details → NextStep Inspections LLC
Testing
Testing cert RME-441 (Colorado DORA Office of Radon Professionals licensee roster (RME), 2026-10-02)
Get a Free Quote Credentials & details → RF Home Inspections
Testing
Testing cert RME-547 (Colorado DORA Office of Radon Professionals licensee roster (RME), 2026-10-02)
Get a Free Quote Credentials & details → Sage Brush Radon
Mitigation Testing
Mitigation cert RMT-152 (Colorado DORA Office of Radon Professionals licensee roster (RMT), 2026-10-02) · Testing cert RME-385 (Colorado DORA Office of Radon Professionals licensee roster (RME), 2026-10-02)
Get a Free Quote Credentials & details → Vango Inspections
Testing
Testing cert RME-373 (Colorado DORA Office of Radon Professionals licensee roster (RME), 2026-10-02)
Get a Free Quote Credentials & details → Broadway Property Inspections
Testing
Testing cert RME-507 (Colorado DORA Office of Radon Professionals licensee roster (RME), 2026-10-02)
Get a Free Quote Credentials & details →
No contractors match both filters at once — try clearing one.
Business Consultant
Mitigation
No website confirmed Get a Free Quote No confirmed website found — no negative evidence, just nothing to link.
Mitigation cert RMT-45 (Colorado DORA Office of Radon Professionals licensee roster (RMT), 2026-10-02)
Credentials & details → C&T Plumbing, LLC
Mitigation
No website confirmed Get a Free Quote No confirmed website found — no negative evidence, just nothing to link.
Mitigation cert RMT-327 (Colorado DORA Office of Radon Professionals licensee roster (RMT), 2026-10-02)
Credentials & details → D&I Home Inspections, LLC dba Pillar To Post
Testing
No website confirmed Get a Free Quote No confirmed website found — no negative evidence, just nothing to link.
Testing cert RME-370 (Colorado DORA Office of Radon Professionals licensee roster (RME), 2026-10-02)
Credentials & details → InspectPro LLC
Testing
No website confirmed Get a Free Quote No confirmed website found — no negative evidence, just nothing to link.
Testing cert RME-192 (Colorado DORA Office of Radon Professionals licensee roster (RME), 2026-10-02)
Credentials & details → Pillar to Post - The Kastberg Team
Testing
No website confirmed Get a Free Quote No confirmed website found — no negative evidence, just nothing to link.
Testing cert RME-214 (Colorado DORA Office of Radon Professionals licensee roster (RME), 2026-10-02)
Credentials & details → Piney Peak Inspections
Testing
No website confirmed Get a Free Quote No confirmed website found — no negative evidence, just nothing to link.
Testing cert RME-486 (Colorado DORA Office of Radon Professionals licensee roster (RME), 2026-10-02)
Credentials & details → Rocky Mountain Radon United, LLC
Mitigation Testing
No website confirmed Get a Free Quote No confirmed website found — no negative evidence, just nothing to link.
Mitigation cert RMT-103 (Colorado DORA Office of Radon Professionals licensee roster (RMT), 2026-10-02) · Testing cert RME-249 (Colorado DORA Office of Radon Professionals licensee roster (RME), 2026-10-02)
Credentials & details → Turning Leaf Home Inspections
Testing
No website confirmed Get a Free Quote No confirmed website found — no negative evidence, just nothing to link.
Testing cert RME-108 (Colorado DORA Office of Radon Professionals licensee roster (RME), 2026-10-02)
Credentials & details → Absolute Radon Safety
Serves this area
Not headquartered in this city — states on its own site that it serves this area. contractor website, checked 2026-10-22 ·
source → Get a Free Quote Credentials & details → 5280 Radon Mitigation
Serves this area
Not headquartered in this city — states on its own site that it serves this area. contractor website, checked 2026-10-22 ·
source → Get a Free Quote Credentials & details → Advanced Radon Solutions
Serves this area
Not headquartered in this city — states on its own site that it serves this area. contractor website, checked 2026-10-22 ·
source → Get a Free Quote Credentials & details → All Phase Radon LLC
Serves this area
Not headquartered in this city — states on its own site that it serves this area. contractor website, checked 2026-10-22 ·
source → Get a Free Quote Credentials & details → Home Systems Data, Inc.
Serves this area
Not headquartered in this city — states on its own site that it serves this area. contractor website, checked 2026-10-22 ·
source → Get a Free Quote Credentials & details → AAA Reliable Inspections
Serves this area
Not headquartered in this city — states on its own site that it serves this area. contractor website, checked 2026-10-22 ·
source → Get a Free Quote Credentials & details → A Buyer's Choice Home Inspections (Lone Tree franchise)
Serves this area
Not headquartered in this city — states on its own site that it serves this area. contractor website, checked 2026-10-23 ·
source → Get a Free Quote Credentials & details → Aspen Ridge Inspection Services LLC
Serves this area
Not headquartered in this city — states on its own site that it serves this area. contractor website, checked 2026-10-23 ·
source → Get a Free Quote Credentials & details → Blue Spruce Inspections
Serves this area
Not headquartered in this city — states on its own site that it serves this area. contractor website, checked 2026-10-23 ·
source → Get a Free Quote Credentials & details → Comfort Home Inspections, LLC
Serves this area
Not headquartered in this city — states on its own site that it serves this area. contractor website, checked 2026-10-23 ·
source → Get a Free Quote Credentials & details → DeBolt Home Inspections
Serves this area
Not headquartered in this city — states on its own site that it serves this area. contractor website, checked 2026-10-23 ·
source → Get a Free Quote Credentials & details → Denver Southwest Inspections LLC dba National Property Inspectio
Serves this area
Not headquartered in this city — states on its own site that it serves this area. contractor website, checked 2026-10-23 ·
source → Get a Free Quote Credentials & details → Elevation Radon Control LLC
Serves this area
Not headquartered in this city — states on its own site that it serves this area. contractor website, checked 2026-10-23 ·
source → Get a Free Quote Credentials & details → JAS Inspections
Serves this area
Not headquartered in this city — states on its own site that it serves this area. contractor website, checked 2026-10-23 ·
source → Get a Free Quote Credentials & details → Master Mitigators
Serves this area
Not headquartered in this city — states on its own site that it serves this area. contractor website, checked 2026-10-23 ·
source → Get a Free Quote Credentials & details → Pillar To Post Home Inspectors (Douglas Krueck)
Serves this area
Not headquartered in this city — states on its own site that it serves this area. contractor website, checked 2026-10-23 ·
source → Get a Free Quote Credentials & details → Quality Building Inspections, LLC
Serves this area
Not headquartered in this city — states on its own site that it serves this area. contractor website, checked 2026-10-23 ·
source → Get a Free Quote Credentials & details → Radon Free Colorado
Serves this area
Not headquartered in this city — states on its own site that it serves this area. contractor website, checked 2026-10-23 ·
source → Get a Free Quote Credentials & details → Radon Safety LLC
Serves this area
Not headquartered in this city — states on its own site that it serves this area. contractor website, checked 2026-10-23 ·
source → Get a Free Quote Credentials & details → Radon Service Pros, LLC
Serves this area
Not headquartered in this city — states on its own site that it serves this area. contractor website, checked 2026-10-23 ·
source → Get a Free Quote Credentials & details → Stauss Inspections, LLC
Serves this area
Not headquartered in this city — states on its own site that it serves this area. contractor website, checked 2026-10-23 ·
source → Get a Free Quote Credentials & details → Twin Peaks Inspections, LLC
Serves this area
Not headquartered in this city — states on its own site that it serves this area. contractor website, checked 2026-10-23 ·
source → Get a Free Quote Credentials & details → Veteran Radon
Serves this area
Not headquartered in this city — states on its own site that it serves this area. contractor website, checked 2026-10-23 ·
source → Get a Free Quote Credentials & details → Two Moose Home Inspections
Serves this area
Not headquartered in this city — states on its own site that it serves this area. contractor website, checked 2026-10-23 ·
source → Get a Free Quote Credentials & details → WIN Home Inspection (Cory Mankin, Englewood)
Serves this area
Not headquartered in this city — states on its own site that it serves this area. contractor website, checked 2026-10-23 ·
source → Get a Free Quote Credentials & details → 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-.
Source: Colorado DORA press release, Aug. 16, 2022 ; DORA Office of Radon Professionals . Checked 2026-11-05. Do I have to test for radon to sell a house in Colorado? No test is required. Since Aug. 7, 2023 (SB23-206), home sale contracts carry a radon warning, sellers must disclose what they know, and CDPHE's radon brochure is required for sales and rental agreements.
Source: SB23-206 ; CDPHE, Radon and real estate . Checked 2026-11-05. Do new homes in Littleton have to be radon-resistant? Not under state law: Colorado has no statewide building code, so it depends on your local code. Boulder, Longmont, Louisville, Erie, Superior and unincorporated Boulder County require radon-resistant construction in new single-family homes, and a trade-group list (as of Sept. 2021) names about 40 cities and 19 counties with a radon appendix. Check with your building department.
Source: Boulder County, Radon-resistant construction ; AARST, RRNC code adoption by state and locality (2026) (trade group) . Checked 2026-11-05. What radon level should I act on? EPA recommends fixing a home at 4 pCi/L or higher and suggests considering a fix between 2 and 4 pCi/L. What your test number means →
Source: EPA, What is EPA's action level for radon? . Checked 2026-11-05.