Radon testing & mitigation in Portland
No Colorado DORA-credentialed radon professional is headquartered in Portland itself, but 1 credentialed Colorado contractor states on its own site that it serves this area — see below, each cited and dated.
Closest city with 5+ credentialed contractors Durango · 7 contractors · 58 mi away →
Also serves this area 1 · self-reported by each company, not independently confirmed for this specific city 285 Radon
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 →
Nearby cities closest RadonScout pages Ouray 4 mi · contractors that say they serve it Ridgway 6 mi · contractors that say they serve it Loghill Village 9 mi · contractors that say they serve it Telluride 12 mi · contractors that say they serve it Mountain Village 14 mi · contractors that say they serve it Lake City 21 mi · contractors that say they serve it Straight-line miles between Census place points, not driving distance. Source: U.S. Census Bureau, 2023 Gazetteer Files (Places) .
Source: Colorado DORA Office of Radon Professionals licensee roster (RME + RMT, all statuses), pulled 2026-10-02, consolidated against the AARST/NRPP certified-professional directory and each company's own web presence —
cross-checked against each contractor's own website, Google Places, and Facebook where Places had
no result. Page generated 2026-11-05 from colorado_contractors_master_v2.csv.
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