Radon Mitigation · Ashburn, Virginia
Radon Mitigation in Ashburn, VA
Loudoun County sits in EPA Radon Zone 1, the highest-risk zone in the country. If your Ashburn test came back at 4 pCi/L or higher, a mitigation system is the fix: a sealed suction point under the slab, a PVC pipe and a quiet fan that vents the gas above the roof. Viper Home Services matches you with certified, independent radon mitigation contractors who serve Ashburn, sends your request to up to three of them, and follows up until you have a quote. The matching is FREE for homeowners; you pay only the contractor you choose.
Get FREE quotes → Call 1-800-455-5691
The problem in Ashburn
Radon is the second-leading cause of lung cancer after smoking, according to the EPA and the U.S. Surgeon General, and it has no smell or color. About one in every fifteen U.S. homes has elevated levels; in Zone 1 counties like Loudoun County the share is higher. Most Ashburn homeowners find out during a home sale, with a closing date a few weeks away and no idea which contractor to trust or what the job should cost.
What we do
Sub-slab depressurization, the standard fix for basements and slabs.
Radon testingCertified short-term and continuous-monitor tests for home sales and peace of mind.
Radon in home salesBuyers, sellers and agents: a mitigation quote in 24 hours, installed before closing.
Crawl spaces and radon-resistant new constructionSub-membrane systems and passive-to-active upgrades.
How it works
- Tell us about your home. Use the form below or call 1-800-455-5691 (answered 24/7). Share your test result or water issue and any deadline.
- We match you. Within one business day your request goes to up to three certified, independent contractors who serve your area. We check their certification and insurance first.
- You compare written quotes. Same job, same details, so the quotes are comparable. No obligation.
- The contractor does the work and we follow up. You deal directly with the contractor you choose, under their warranty; we check in after the job.
What it costs
| Service | Typical cost | Notes |
|---|---|---|
| Standard sub-slab system, single suction point | $800 – $1,500 | most basements and slab homes |
| Larger or multi-point system, interior routing, high-level readings | $1,500 – $2,500 | finished basements, additions, levels above 20 pCi/L |
| Crawl-space sub-membrane system | $1,500 – $3,000 | depends on crawl-space size |
| Activating a passive new-construction system (fan added) | $300 – $700 | if the builder stubbed a pipe |
Full pricing and comparisons →
Get FREE quotes from certified Ashburn contractors
Tell us about your home. We send your request to up to three certified, independent contractors within one business day. No cost to you, no obligation.
Ashburn by the numbers
Ashburn is the center of eastern Loudoun County: Dulles Technology Corridor data centers, the Silver Line's Ashburn station, and tens of thousands of single-family homes and townhomes with finished basements. Home sales here routinely include a radon test, and Loudoun's Zone 1 geology means many of those tests come back above the EPA action level.
- Loudoun County is in EPA Radon Zone 1, the highest-potential zone, with predicted average indoor levels above the 4 pCi/L action level
Source: U.S. Environmental Protection Agency, Map of Radon Zones (Virginia) - About 45,000 residents in the Ashburn census-designated place; Loudoun County has about 440,000
Source: U.S. Census Bureau population estimates - Most Ashburn homes were built after 1990 on slab or basement foundations in planned communities such as Ashburn Farm, Ashburn Village, Broadlands, Brambleton and One Loudoun
Source: Loudoun County; U.S. Census Bureau American Community Survey - Virginia law requires anyone who offers radon testing or mitigation to be certified by the National Radon Proficiency Program (NRPP) or the National Radon Safety Board (NRSB)
Source: Code of Virginia § 32.1-229.01; Virginia Department of Health Radon Program
Areas we serve around Ashburn
1990s neighborhoods with full basements
newer planned communities south of Route 7
mixed-use centers near the Silver Line
larger homes along the Potomac side of Route 7
eastern Loudoun neighbors toward Route 28
the county seat and western Loudoun, where private wells are common
Also serving Leesburg, Sterling, Herndon, Reston, Chantilly, South Riding, Purcellville. All service areas →
Frequently asked questions
Does Viper Home Services install the system?
No. We match you with independent, certified radon contractors who serve Ashburn and send your request to up to three of them. The contractor you choose does the work under its own certification, insurance and warranty.
What level of radon needs mitigation?
The EPA recommends fixing a home at 4 pCi/L or higher and considering a fix between 2 and 4 pCi/L. There is no known safe level; lower is better.
How long does installation take?
Most systems are installed in four to eight hours, in one visit. The post-mitigation test is done a few days to a few weeks later.
Will it be loud or ugly?
Modern fans are quiet, about the sound of a refrigerator, and are mounted outside, in the attic or in the garage. Pipes can be routed through closets or along the exterior to match the siding.
Are the contractors licensed?
Virginia and Maryland do not issue a separate radon license; the standard is NRPP or NRSB certification, which Virginia requires for real-estate radon work. Every contractor we match you with holds it, and we check it before adding them.
What does the matching cost me?
Nothing. Homeowners never pay us. If you want, call 1-800-455-5691 and tell us what your test showed; we will send your request within one business day.
About Viper Home Services
Viper Home Services is the home-services division of Viper Consulting™. We connect Ashburn and Loudoun County homeowners with certified, independent radon professionals and handle the follow-up, so you get quotes fast and the job gets scheduled. We do not perform the installations ourselves. Main website: viperconsulting.ai.