Skip to content
Home/Radon Testing/Fairfax County/Fair Oaks, VA
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 Fair Oaks 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. A standard Fair Oaks appointment covers one residence. A second apartment, separately occupied lower unit or common building space needs its own authorization and scope discussion before pricing is confirmed.
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 Fair Oaks.
EPA places Fairfax County in radon Zone 1, a county-scale potential category rather than a result for a Fair Oaks address. EPA says the map should not be used to decide whether an individual home is tested. Show the technician the lowest level that could be used regularly, including a lower room planned as an office, bedroom or recreation area. Placement follows the actual residence and intended use, with a location selected away from drafts and routine disturbance.
A Fairfax County plan published in 1986 identifies Fair Oaks as a regional shopping center and separately notes then-recent townhouses and garden apartments nearby. That source describes nearby development in its plan context; it does not classify every Fair Oaks address or establish present housing totals. Confirm whether the appointment is for one townhouse, one apartment or another residence, then provide its unit, lowest usable interior area and access contact instead of inferring a layout from the place name.
Local background: Fairfax County 1986 plan, Fair Oaks and nearby-development context, Virginia Department of Health indoor radon map guidance, EPA Map of Radon Zones and its limitations.
01
Send visitor parking, call-box and elevator instructions with the order. Name a backup contact if the primary occupant cannot admit the technician on the return visit.
02
Finish cleaning and repair activity before setup, maintain the instructed building conditions for at least 48 hours, and keep residents from handling the device.
03
Tell the technician how each lower room is used now and what may change after closing. A currently empty room can matter when regular occupancy is planned.
Where we test in Fair Oaks, and what to tell us
Fair Lakes, Penderbrook
In Fair Lakes or Penderbrook, identify the exact building and unit before dispatch. Desk, garage or association procedures should be arranged for both placement and retrieval.
Random Hills
At Random Hills, choose dates without furniture delivery, painting or floor work in the expected device area. The monitor needs a stable setting throughout collection.
Fair Oaks Estates, Waples Mill Estates
For Fair Oaks Estates or Waples Mill Estates, describe a lower den, walkout or future-use room during scheduling. The technician will verify the appropriate measurement level on site.
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.
It notes townhouses and garden apartments near the regional shopping center in that plan context. It does not identify the housing form or radon condition at every Fair Oaks address.
Arrange entry to the exact unit for setup and pickup, including desk or elevator approval. Identify the lowest regularly usable level inside that residence and any management equipment rule.
Complete painting, flooring and repeated open-door work before the monitor is placed. Select a quieter period when the room and normal building operation can remain stable.
Provide the contingency expiration, available access windows and latest useful report time. The scheduler can then evaluate setup, the minimum 48-hour measurement, collection and reporting.
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
