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Radon testing

Radon Testing in Dumfries, VA

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 Prince William County

Schedule a radon test Call (703) 450-6398

What our customers say

From our customer reviews.

They conducted the test right away and kept me informed every step of the way.

They arrived the day after I called, on time, set up the Radon test and left within 5 minutes.

Everything was handled so professionally, quickly and so easy to have our house tested for radon.

They found elevated radon in the home and numerous issues on the home inspection report which were remedied before I moved in.

Great service, very thorough inspection and highlighted items in a very approachable and organized manner.

How much does radon testing cost in Dumfries?

A radon test in Dumfries 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 covers one Dumfries residence. If the request involves two separately occupied units or an accessory dwelling, describe both before booking so the team can quote the intended scope.

Day 1

Drop-off

We place the monitor

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

The monitor does the work

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

We collect it, read it, and write it up

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 Dumfries.

Dumfries radon testing in Prince William County

Dumfries is a town in Prince William County, which the EPA places in radon Zone 2. That county category describes regional potential; it is not a radon reading for a Dumfries house or condo. Test the booked residence and tell the technician which lowest room could be used regularly, including a planned bedroom, office or recreation area.

Prince William County lists the Town of Dumfries as a separate local jurisdiction for some services. A Dumfries mailing name therefore is not enough to identify the building or entry plan. Give the complete address and unit, explain whether a lower space belongs to the booked dwelling, and choose a measurement period without moving or repair work near the monitor. Someone must be able to admit the technician for placement and collection.

Local background: Prince William County areas and town jurisdictions, Virginia Department of Health EPA radon risk map, EPA Map of Radon Zones and map limitations.

Williamstown and Forest Park

Reserve a stable test interval and describe any lower room intended for regular use after the sale.

Princeton Woods unit access

Provide the exact condo or townhouse number, building entrance and contact for both visits.

Four Seasons in Historic Virginia

Confirm who controls entry if the property is vacant, occupied by a tenant or changing owners.

Where we test in Dumfries, and what to tell us

Williamstown, Forest Park
For Williamstown or Forest Park, finish nearby work before placement and keep the selected room undisturbed.
Princeton Woods
At Princeton Woods, name the residence being tested and arrange any gate, lobby or association access.
Four Seasons in Historic Virginia
For Four Seasons in Historic Virginia, identify an authorized keyholder for setup and return collection.

We only perform testing, not mitigation.

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.

Before you book in Virginia

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.

Radon testing near Dumfries

Nearby

Radon testing in Dumfries, answered straight

How should a Dumfries seller prepare the selected room before placement?

Keep the device area clear, maintain normal heating or cooling and follow the appointment instructions. Finish cleaning, repairs and furniture moves before setup.

What should a Princeton Woods buyer confirm with the listing agent?

Ask who can authorize unit entry for both visits and whether management has an equipment procedure. Pass those details to the team before placement.

Can the monitor be moved within a Four Seasons residence after setup?

Leave it where the technician placed it. If someone shifts, covers or unplugs the device, record the event and contact the team for an evaluation.

How much contract time should a Dumfries buyer reserve for radon testing?

Allow for scheduling, setup, a minimum 48-hour measurement, collection and the written result. Share the deadline when booking so availability can be assessed.

Book a radon test in Dumfries

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

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