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Home/Radon Testing/Prince William County/Dale City, 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 Prince William County
A radon test in Dale City 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 Dale City dwelling is covered; identify any renter or separate unit. Confirm the reporting email and transaction contact when a buyer, seller and occupant need the result on different schedules. Provide a backup keyholder for collection. Verify the collection date with residents.
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 Dale City.
Prince William County is EPA Zone 2; a Dale City home needs an address-specific measurement.
County history says Dale City opened in 1965 and records townhouse and multifamily rezonings that year. That dated community context does not classify a current address. Nottingdale, Cheshire Ridge, Daleview Manor, Ashland and Chesapeake each require dwelling-specific access and placement. A Nottingdale homeowner can prepare by identifying the lowest space that might support regular work, sleep or recreation. At Cheshire Ridge or Daleview Manor, give the exact townhouse address and do not assume an adjoining residence shares the result. In Ashland or Chesapeake, coordinate household schedules so the selected room remains accessible and the device stays undisturbed until collection. Buyers should reserve enough contingency time for both technician visits and reporting. Tenants should obtain any required permission before placement. If contractors, cleaners or guests must enter, tell them the testing conditions and device location. A recorded interruption can be evaluated by the technician; moving or resetting the monitor would make that review harder.
Local background: Dale City primary housing context, Virginia Department of Health radon guidance, EPA Map of Radon Zones.
01
Opening and rezoning dates do not provide a home’s radon reading.
02
Each attached residence needs its own result.
03
Tell everyone when the monitor will be collected. Post the collection time for all occupants.
Where we test in Dale City, and what to tell us
Nottingdale
In Nottingdale, prepare the present lowest potentially regular-use room.
Cheshire Ridge, Daleview Manor
At Cheshire Ridge or Daleview Manor, distinguish the booked townhouse from neighbors.
Ashland, Chesapeake
In Ashland or Chesapeake, coordinate occupants for an undisturbed interval.
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.
Use the exact address and arrange access to that residence.
No. The history does not assign a date to every property.
Tell the technician because possible regular use affects placement.
No. Schedule the test outside the active move.
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
