Castle Rock Radon Mitigation provides radon mitigation in Franktown, CO, serving homes and commercial properties throughout Douglas County. Franktown sits at the junction of Highway 83 and Highway 86 on large acreage parcels served by private wells, and that geology is exactly why radon accumulates indoors here.
Castle Rock Radon Mitigation also handles radon testing and post-mitigation verification, real estate transaction systems, new construction rough-ins, and repairs to failed or underperforming systems for Franktown, CO properties. Every crew works under CDPHE Radon Mitigation License, carries current insurance, and arrives with calibrated continuous radon monitors, sealed schedule-40 PVC, and inline fans sized to the sub-slab conditions under your specific foundation.
Why Choose Castle Rock Radon Mitigation in Franktown
Colorado Radon Geology, Not a Template
We size every system to the soil and foundation under your specific house. Douglas County sits on the Dawson Formation, and a one-size fan spec does not work here.
CDPHE Licensed
Colorado requires state licensure for radon mitigation under HB21-1195. We hold it, and we carry insurance on every job.
Post-Mitigation Test Included
We do not just install and leave. Every job includes a follow-up test proving the level actually came down, with documentation you can hand to a buyer or lender.
Published Pricing
Our price ranges are on this website. You should not have to book a sales visit to find out what a radon system costs.
We Work to Your Closing Date
Most of our calls come from an inspection result with a deadline attached. We schedule around the contract date, not our convenience.
Someone Answers the Phone
Someone picks up. We book assessments the same week across most of Douglas County.
Radon Mitigation in Franktown, CO
Castle Rock Radon Mitigation organises every radon mitigation job in Franktown, CO around one outcome: a permanent sub-slab system that pulls soil gas out from under the foundation and vents it above the roofline, verified by a post-mitigation test. Franktown has a mix of 1970s and 80s rural homes where radon systems were never part of original construction, which is why a generic template system rarely performs here.
Residential Radon Mitigation in Franktown, CO
Castle Rock Radon Mitigation works Franktown homes where the trigger is an inspection result over 4 pCi/L, a pending closing date, or a long-term test that came back high. After the assessment you get photographs of the existing conditions, a written scope, and a fixed price before any material is ordered. Our crews also cover radon mitigation in Sedalia for homeowners comparing quotes across the county.
Commercial Radon Mitigation in Franktown, CO
Castle Rock Radon Mitigation handles offices, schools, daycares and multi-unit buildings where radon is a compliance and liability question rather than a comfort one across Franktown. We schedule around occupancy and provide documentation your building manager, inspector or insurer can file.
Why Radon Is High in Franktown, CO
Castle Rock Radon Mitigation tracks the conditions specific to Franktown because they dictate how a system has to be built here. Radon comes from uranium decaying in the soil and rock beneath a building, then moving through cracks, sumps and utility penetrations into the lowest occupied level. Franktown has a mix of 1970s and 80s rural homes where radon systems were never part of original construction.
What Drives Readings Up in Franktown
Castle Rock Radon Mitigation measures before and after, at the lowest occupied level, over a documented test period. Seasonal swings matter: readings in Franktown are typically highest in winter when homes are closed up and the stack effect pulls soil gas upward through the foundation.
Difficult Radon Installations in Franktown
Finished Basements and Walkouts
Castle Rock Radon Mitigation runs pipe through closets, mechanical rooms and garages so the system stays out of finished living space, and we discuss every routing option before we cut anything.
Crawl Spaces and Mixed Foundations
Castle Rock Radon Mitigation handles homes that combine a slab, a crawl space and a walkout, which need either a membrane system or multiple suction points tied into one fan.
Our Services in Franktown
Radon Mitigation Cost in Franktown, CO
Castle Rock Radon Mitigation publishes pricing because most Franktown homeowners are trying to budget, not book. Radon mitigation is one of the few home systems with genuinely predictable pricing, so there is no reason to hide it behind a sales visit.
| Scope | Typical range |
|---|---|
| Standard sub-slab depressurization, single suction point | $1,200 – $1,800 |
| Two suction points / larger footprint | $1,800 – $2,600 |
| Crawl space membrane system | $2,200 – $4,000 |
| New construction rough-in | $500 – $1,100 |
| Post-mitigation radon test | Included |
Castle Rock Radon Mitigation confirms the exact figure after a free assessment. Homeowners in radon mitigation in Roxborough Park and radon mitigation in Elizabeth can book the same week.
What Franktown Homeowners Ask Us
How much does radon mitigation cost in Franktown, CO?
Most Franktown, CO homes fall between $1,200 – $1,800 for a standard single-suction-point system. Larger footprints or crawl spaces run higher. Our full price list is published on this site.
What radon level requires mitigation in Franktown, CO?
The EPA action level is 4.0 pCi/L. Colorado is unusual: 62 of its 64 counties are EPA Zone 1, the highest radon potential category, and roughly half of Colorado homes test above the action level.
How long does installation take?
A typical Franktown, CO system is installed in a single day. We run a post-mitigation test afterward to confirm the system brought the level down.
Do I need this done before closing?
If an inspection came back high, mitigation is usually negotiated as a repair item with a closing deadline. We schedule around that date and provide documentation for the file.
Is your work licensed in Colorado?
Yes. Colorado requires state licensure for radon measurement and mitigation professionals under HB21-1195. We hold current CDPHE licensure and carry insurance on every job.