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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 Arlington County
A radon test in Arlington 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. The residential price covers one Arlington home or unit. Book online or call with the exact address, unit and access contact when the property is attached, rented or managed.
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 Arlington.
Arlington County is EPA Zone 2. Test the residence itself because the federal map is a planning tool, not an address result.
Lyon Village, Ashton Heights and Westover appear on Arlington County’s historic-district list. District status does not assign one age or building form to every address. For a condominium or apartment, identify the unit and arrange front-desk or management entry for both visits. In a house, show the technician any low room that could become an office, bedroom or recreation space.
Local background: Arlington primary housing context, Virginia Department of Health radon guidance, EPA Map of Radon Zones.
01
Lyon Village, Ashton Heights and Westover appear on Arlington County’s historic-district list. District status does not assign one age or building form to every address.
02
Identify the individual Arlington unit and arrange front-desk or management entry for placement and retrieval. Common areas and neighboring residences are outside that unit-specific scope.
03
Show the technician a lower room planned for later work, sleep or recreation even when it is unfinished today. Potential regular use can affect the measurement level.
Where we test in Arlington, and what to tell us
Lyon Village, Ashton Heights, Arlington Ridge
For a condominium or apartment, identify the unit and arrange front-desk or management entry for both visits.
Westover, and the post-war streets around it
In a house, show the technician any low room that could become an office, bedroom or recreation space.
Rosslyn, Clarendon, Shirlington
For an address in Rosslyn, Clarendon, Shirlington, use the current floor plan and keep the selected area available for placement and retrieval.
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.
No. Historic designation does not change the radon protocol or predict a reading. The technician uses the current layout of the Arlington residence and selects the lowest level that could be used regularly.
A result from one condominium applies to that tested unit, not automatically to every residence in the building. Each additional unit needs its own defined scope and authorized access.
Allow time for placement, the required measurement period, retrieval and delivery of the report. Confirm agent, seller or building access for both visits before the contract deadline.
Show the technician the lowest room that could support regular living, sleeping, work or recreation. Present use as storage does not rule it out when regular use is reasonably possible.
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
