Denver sits in Colorado's Zone 1 radon area — the highest-risk designation. If your home tested above 4.0 pCi/L, you need a mitigation system. We install sub-slab depressurization systems that bring your home below 2.0 pCi/L, guaranteed in writing.
Radon is a naturally occurring radioactive gas that forms from the decay of uranium in soil and rock. Colorado's Front Range geology — uranium-rich granitic soils and the Denver Basin formation — produces radon at consistently higher rates than national averages. The EPA classifies most of the Denver metro as Zone 1, the highest-risk radon zone designation.
The standard treatment is sub-slab depressurization (SSD): a system of PVC pipe, a continuously running fan, and exhaust routing that pulls radon from beneath your foundation before it enters your living space. The fan creates negative pressure under the slab, intercepting radon gas and venting it harmlessly above the roofline or away from windows.
The system components are simple: one or more suction points drilled through the slab, PVC pipe running to a fan, and an exhaust pipe routed to the exterior. A manometer (a simple U-shaped tube) on the pipe lets you verify the system is running. Modern systems are quiet, efficient, and virtually maintenance-free beyond checking the manometer periodically.
Post-inspection reactive mitigation is the most common scenario — a home inspection revealed elevated radon, and now you need it fixed before or after a sale. Preventive installation is increasingly popular: homeowners who know Denver's radon risk and want to address it before testing high. Peace of mind for families with young children or health concerns. Pre-sale preparation to ensure a clean inspection report and avoid closing delays.
If your test came back between 4.0 and 8.0 pCi/L, a standard single-suction-point system almost always resolves the issue. Higher readings (8.0+ pCi/L) sometimes require two suction points or additional work, but the solution is always straightforward — and always starts with a free quote.
We start with a brief phone or on-site assessment to understand your foundation type (full basement, slab-on-grade, crawlspace, or combination), the soil conditions under your slab, and any existing passive radon rough-ins. Then we select the optimal suction point location — typically near the lowest point of the slab, away from footings.
On install day (usually 4–6 hours), our technician drills the suction point, cores through the foundation wall for pipe routing, installs the fan, and runs the exhaust to the exterior or through the attic. We clean up completely, label the system, install the manometer, and walk you through how to monitor it.
After installation, we place an independent radon test. Results are typically available within 24–48 hours for short-term tests or 48–96 hours for the standard charcoal canister. When results come back below 2.0 pCi/L, we send you the written guarantee and test documentation.
Standard residential sub-slab mitigation: $1,400–$1,800. Homes requiring two suction points: $1,800–$2,400. Post-install re-test included. Written guarantee included.
See full published pricing →Radon flagged your inspection? We specialize in closing timelines. 48-hour install window, closing-ready documentation.
Save Your Deal →