Radon testing & mitigation in Johnstown
3 credentialed Colorado radon professionals serving Johnstown, 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 Johnstown-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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Mitigation
Testing
Website confirmed
2 of 2 shown
Eagle Property Inspections
Testing
Testing cert RME-114 (Colorado DORA Office of Radon Professionals licensee roster (RME), 2026-10-02)
Get a Free Quote Credentials & details → HomeTeam Inspection Service (Nick Diede, Northern Colorado)
Testing
Testing cert RME-371 (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.
No website confirmed 1 · credentialed, phone-only — no negative evidence, just nothing to link Freedom Homes LLC
Testing
No website confirmed Get a Free Quote No confirmed website found — no negative evidence, just nothing to link.
Testing cert RME-695 (Colorado DORA Office of Radon Professionals licensee roster (RME), 2026-10-02)
Credentials & details →
Also serves this area 10 · self-reported by each company, not independently confirmed for this specific city Aspen 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 → 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 → Certified Property 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 → ColoRadon 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 → Evergreen RCS
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 → Fletcher's 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 → 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 → Quality 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 → HomeSpec, Ltd
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 → Front Range Home Inspections (Brian Persons, Greeley)
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 →
Questions
Nearby cities closest RadonScout pages Milliken 3 mi · 1 credentialed pro based there Berthoud 3 mi · 2 credentialed pros based there Mead 7 mi · contractors that say they serve it Gilcrest 7 mi · contractors that say they serve it Platteville 7 mi · contractors that say they serve it Evans 9 mi · 1 credentialed pro based there 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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