Radon Mitigation in Colorado Springs, CO
El Paso County sits in EPA Radon Zone 1. If your test came back at or above 4 pCi/L, here is what the fix actually involves, what it should cost, and how to check that whoever bids on it is licensed.
Get connected with a local pro
Prefer to talk? (307) 800-1117
Radon is the leading cause of lung cancer among people who have never smoked, and CDPHE attributes roughly 500 lung cancer deaths a year in Colorado to it. El Paso County is classified by the EPA as Radon Zone 1, the highest of its three categories. Of 22,272 pre-mitigation tests logged with the Colorado Department of Public Health and Environment between 2005 and 2024, 39.5% came back at or above the EPA action level of 4 pCi/L. The county median was 3 pCi/L.
Most people find out during a real estate inspection. The test fails, the objection deadline is days away, and a decision has to be made about a house that has not closed yet. That timing is what makes radon feel urgent. The fix itself is routine, takes about a day, and the price range is well established.
Since July 1 2022, Colorado has required anyone performing radon measurement or mitigation to hold a license from the Department of Regulatory Agencies. A general contractor, plumber or HVAC company is not automatically authorized to do this work. Colorado issues two separate licenses, one for radon measurement and one for radon mitigation, so a professional licensed to test a home is not automatically licensed to fix it. Both are verifiable in DORA's public lookup, which also shows any disciplinary history. Checking takes about a minute and is the single most useful thing a homeowner can do before signing anything.
Services
Radon Mitigation
Sub-slab depressurization systems for basement and slab-on-grade homes.
Radon Testing
Short-term and long-term measurement, and what the numbers actually mean.
Radon and Home Sales
Failed inspection test, objection deadline approaching, and a closing that has to happen.
Crawl Space Radon Mitigation
Submembrane depressurization with a sealed vapor barrier over dirt floors.
Radon System Repair and Fan Replacement
Diagnosing failed fans, blocked pipes and systems that quietly stopped working.
Why homeowners here trust us
- Every professional we connect you with holds a current Colorado DORA radon license
- Honest price ranges sourced from CDPHE and EPA, not invented local figures
- We show you how to verify a license yourself before you commit
- Post-mitigation retest expectations explained up front
Talk to someone today
Areas we serve
Common questions
What radon level requires mitigation?
The EPA action level is 4.0 pCi/L. At or above that, mitigation is recommended. The World Health Organization uses a lower reference of about 2.7 pCi/L, and plenty of Colorado homeowners choose to mitigate in the 2 to 4 range, particularly when there is finished basement living space.
How much does radon mitigation cost in Colorado Springs?
CDPHE puts the typical Colorado system at roughly $1,200 to $2,500, with about $1,500 being the most common all-in price. Crawl space work runs higher, generally $2,000 to $5,000. No agency publishes a Colorado Springs specific average, so treat any site quoting an exact local figure with suspicion.
Does my contractor need a license?
Yes. Since July 1 2022, anyone performing radon measurement or mitigation in Colorado must hold a license from the Department of Regulatory Agencies, on top of NRPP or NRSB certification. Being a licensed general contractor, plumber or HVAC company does not cover radon work. You can verify a license through DORA's online lookup before you sign anything.
How do I check that a radon contractor is licensed?
Search the contractor or company in DORA's Division of Professions and Occupations license lookup. Confirm the license is current and, importantly, that it is the right type: Colorado licenses radon measurement and radon mitigation separately, and holding one does not authorize the other. The listing also shows any disciplinary action taken against the licensee. State licensure requires NRPP or NRSB certification first, so a licensed Colorado professional has cleared a national proficiency program as well.
Does the seller have to pay for mitigation?
No. Under the Colorado Contract to Buy and Sell Real Estate the buyer pays for inspections, and who pays for mitigation is a negotiation like any other repair. Colorado does require a seller who knows about past or present radon to disclose it on the Seller's Property Disclosure.
Why are winter readings higher?
Cold weather closes the house up and the stack effect pulls air upward through it, which increases the pressure difference drawing soil gas in through foundation cracks. At Colorado Springs elevation this effect is pronounced. Winter testing captures something close to worst-case conditions, which is useful information.
How long does a radon system last?
The pipe and sealing work last indefinitely. The fan is the wearing part, typically rated for five to ten years of continuous operation. Check the manometer gauge on the pipe every few months; level liquid on both sides means the fan has stopped.
Official Colorado radon resources
- Verify a Colorado radon license (DORA/DPO lookup) — check any contractor's license status and disciplinary history before you sign
- Colorado Office of Radon Professionals (DPO) — the state licensing program; measurement and mitigation are separate licenses
- CDPHE — Radon — the state's radon program; radon is the leading cause of lung cancer among non-smokers and causes roughly 500 lung cancer deaths a year in Colorado
- CDPHE — Testing and mitigating your home — how measurement and mitigation actually work
- CDPHE — Radon and real estate — disclosure and transaction guidance
- Colorado radon data — test results by county, including El Paso
- CDPHE — Radon FAQ — the state's plain-language answers
- CDPHE — Low-income radon mitigation assistance (LIRMA) — financial help with the cost of a system
- Radón — CDPHE (Español) — the state's radon information in Spanish