Skip to content
Home/Radon Testing/Frederick County/Winchester, 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 Winchester City
A radon test in Winchester 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. One quoted test covers one Winchester residence. Supply the City address, unit and responsible keyholder.
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 Winchester.
A radon map cannot tell you the level inside a Winchester home. The useful result comes from measuring the residence you own or plan to buy. An Old Town house may have a lower level used as an office, guest room or family room, while another property may have its regular living space at grade. Tell the technician how the actual home is used, including any lower room a buyer plans to occupy, so placement follows the testing protocol.
For a Winchester radon test, give us the full address and a contact who can open the home when the monitor is placed and collected. The device remains undisturbed for at least 48 hours. Choose a period when residents can follow the closed-house instructions and work in the test area can pause. If the property has a separate apartment or is being sold on a deadline, discuss that scope and timing before booking.
Radon testing guidance: Virginia Department of Health radon guidance, Virginia radon risk-map guidance, EPA guide for home buyers and sellers.
01
A citywide map or a neighbor's reading cannot replace a Winchester property's result.
02
Tell the technician about a basement office, bedroom or future living area.
03
Provide access for placement and collection after at least 48 hours.
Where we test in Winchester, and what to tell us
Old Town Winchester
For an older or mixed-use building, identify the residence and any separate unit.
Amherst and Stewart Street corridors
Describe the lowest room that could be used regularly in the booked home.
Valley Avenue area
Schedule around repairs or moving so the monitor can stay undisturbed.
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. A map describes an area, not the air inside one house. Test the residence itself to obtain a property-specific radon result.
Tell the technician which lower room is used or could be used regularly, including a space a buyer plans to finish. The technician selects an appropriate location after reviewing the layout.
A standard appointment covers the booked residence. Describe any separately occupied apartment or accessory dwelling before booking so its testing scope and access can be confirmed.
Allow for placement, at least 48 hours of measurement, collection and the written report. Share the contract deadline when requesting the appointment.
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
