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Radon testing
A continuous monitor on the lowest level that could be used regularly, read every hour for at least 48 hours. The written result comes the day we collect it.
4.9 rating, over 4,000 reviews NRSB-certified technicians Serving Fairfax County
A radon test in Fairfax Station is $185, or $175 when it is added to a home inspection. That is the whole price: both visits, the monitor for the full 48 hours, and the written report with every hourly reading in it. Pricing is for one Fairfax Station residence. A guest dwelling, tenant apartment or other independently occupied structure on the same parcel should be listed separately before the visit.
Day 1
Drop-off
A technician places it on the lowest level that could be used regularly, following EPA placement limits and the intended use of the space, inside a two-hour arrival window. With a home inspection, placement happens during the inspection visit.
48 hours
The house stays closed
For a short-term real-estate test, EPA guidance calls for closed-building conditions for at least 12 hours before the test and throughout the measurement. Windows stay closed, exterior doors open only for normal entry and exit, and the monitor logs hourly readings that help document the test conditions during the minimum 48-hour measurement.
Day 3
Pick-up and report
A technician picks the monitor up in another two-hour window and pulls the full record on the spot. The written report reaches you the same day.
NRSB-certified technicians. Our own team, certified by the National Radon Safety Board, not a subcontractor.
EPA testing guidance. Placement, closed-house conditions and the 48-hour minimum follow it, and your average is read against the EPA action level of 4.0 pCi/L.
Continuous monitors. Airthings Corentium Pro instruments, logging every hour for the whole test.
Appointment times are requests until our team confirms them. What the number means, how to prepare the property and the eight questions everyone asks are on the radon testing page; this page is about Fairfax Station.
Fairfax County appears in EPA radon Zone 1, but that regional designation cannot predict a measurement for a Fairfax Station home. EPA advises testing the individual residence rather than treating the zone as an address-level answer. Walk through the lowest level that could be used regularly and mention any finished room, future living area or space controlled by another occupant. The technician chooses the measurement position after seeing the actual vertical layout and confirming the client's authorized scope.
The Fairfax County Pohick plan says development east of Ox Road predominantly includes detached houses and townhouses. This is district context from the county plan, not a statement about every Fairfax Station property or the area west of Ox Road. Give the complete service address and describe the actual dwelling. Longer drives, private entrances or a separately controlled lower area are appointment facts only when confirmed for that residence.
Local background: Fairfax County Pohick plan overview for development east of Ox Road, Virginia Department of Health radon information, EPA county radon-zone guidance.
01
Supply gate codes, driveway landmarks, animal cautions and a phone number answered at the property. Recheck those details before each service visit.
02
Explain which rooms could support regular living, work or recreation and who controls them. The technician can then assess placement without assuming a foundation arrangement.
03
Avoid overlapping the measurement with movers, contractors or a large gathering. Follow the closed-building directions for no less than 48 hours and report any disruption.
Where we test in Fairfax Station, and what to tell us
Barrington, South Run
In Barrington or South Run, clarify whether a gate or private road affects arrival. Provide directions that remain useful when the technician returns to collect the monitor.
Hampton Chase, Fairfax Station East
For Hampton Chase or Fairfax Station East, point out a lower walkout room and its planned use. Exterior access alone does not decide the testing location.
Canterberry Estates
At Canterberry Estates, reserve a period without moving crews or renovations around the selected room. Household members should know the equipment must remain untouched.
We do not install radon systems, so we have nothing to gain from your number. If the result is at or above the EPA action level of 4.0 pCi/L, you choose who fixes it. Once the system is in, we can test again and tell you what it reads.
Virginia's residential disclosure statute directs the seller's disclosure statement to say that the owner makes no representation about whether the property is in an EPA Zone 1 or Zone 2 locality. It directs buyers to use due diligence, including reviewing EPA, Virginia Department of Health and NRSB information and ordering a radon inspection before settlement as the contract allows.
Va. Code section 55.1-703. Current as of September 2026. General information, not legal advice.
The cited Pohick plan describes development east of Ox Road as predominantly detached houses and townhouses. It should not be extended to every Fairfax Station address or used as a property classification.
Send turn-by-turn landmarks, gate instructions, alarm steps and an on-site contact. Confirm that the same route will be open when the device is scheduled for retrieval.
Identify it separately from the main home and state which residence the client is authorized to test. Occupancy, entry and pricing must be confirmed for the requested dwelling.
Record when the door was open, how long the activity lasted and whether anyone touched the device. Give those details to the technician rather than changing the monitor yourself.
Book online or call (703) 450-6398.
Schedule a radon test Request a price
NextDay Inspect
46179 Westlake Dr, Ste 200, Sterling, VA 20165
(703) 450-6398
