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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 all of Culpeper County
Schedule a radon test Call (703) 450-6398 Find your community
One community in the county has a page of its own with local detail. The test, the price and the technicians are the same across the county, so you can book from either page.
The Town Historic District Handbook says the Culpeper Historic District includes residential dwellings and buildings from the early 1800s to the 1930s.
A radon test in Culpeper County 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 listed price covers one residence. Identify additional houses or units before booking so the team can confirm the broader assignment.
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 Culpeper County.
EPA's county screening data places Culpeper County in Zone 2. EPA cautions that the map cannot predict the result in an individual home. The reading collected inside the specific Culpeper County residence is the evidence for that property.
For a Culpeper County measurement, provide the full address, the residence and the lowest level that could be used regularly. Culpeper is the linked local community. An additional dwelling, unit or address should be identified separately so the team can confirm the measurement plan. If the Culpeper address is undergoing renovation, schedule outside work that opens exterior doors or changes ventilation.
Local background: EPA Map of Radon Zones raw county data, EPA Map of Radon Zones guidance, Culpeper local source.
01
The EPA category does not tell a homeowner whether a particular Culpeper County residence is above or below an action level.
02
The Town handbook describes dwellings and buildings from the early 1800s to the 1930s in the Culpeper Historic District, not every county home.
03
The address, collection dates and device location explain what the result covers and prevent it from being mistaken for another residence.
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 describes EPA's estimated area potential. It cannot answer for one address, so rely on the measurement made in the residence.
Allow time for 12 hours of closed conditions before placement, the complete 48-hour collection and monitor pickup. Share the contract deadline when booking online or calling so the parties can judge whether the requested sequence fits.
Do not assume it can. Identify both dwellings and ask for a measurement scope and price that address the actual property question.
Retain the measured address, device location, collection dates and any noted condition events with the written result. Those details show exactly what the report answers. They also prevent a later buyer, tenant or contractor from mistaking the measurement for another residence or a different period.
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
