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Home/Radon Testing/Prince William County/Woodbridge, 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 Woodbridge 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 rate covers one Woodbridge home or apartment. Provide the unit and management contact when booking. Share parking instructions and any elevator reservation that affects the two technician visits.
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 Woodbridge.
Woodbridge buyers and owners need a result from the particular residence, whether it is a detached house, townhouse or condo. A Prince William County map cannot predict the indoor reading for a Dale City basement or a Belmont Bay unit. Tell the technician the lowest room that is or could be used regularly. For a condo, identify the exact building and unit rather than relying on a measurement from a common area or another apartment.
A Woodbridge radon appointment requires access to the same residence for monitor placement and collection after at least 48 hours. Provide the address, unit number if applicable, and a contact for each visit. Residents should follow the closed-house instructions and leave the device in place. If a tenant, agent, security desk or building manager controls entry, coordinate both visits before choosing dates, especially when a purchase contract has a short deadline.
Radon testing guidance: Virginia Department of Health radon guidance, Virginia radon risk-map guidance, EPA guide for home buyers and sellers.
01
Test the Woodbridge home or unit in question, even if a nearby property has a report.
02
Describe a basement bedroom, office or future family area.
03
Confirm entry to the private unit on both visits.
Where we test in Woodbridge, and what to tell us
Dale City and Lake Ridge
For a house or townhouse, mention lower rooms planned for regular use.
Occoquan and River Oaks
Give the precise residence and any shared-entry instructions.
Belmont Bay and Port Potomac
For a condo or managed property, arrange unit access for setup and pickup.
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. Radon levels can differ between homes. A measurement in the residence you are buying or occupying gives you the relevant result.
Provide the building and unit number, parking or desk instructions, and a contact who can admit the technician for placement and collection.
Tell the technician how that basement is or will be used. A lower room suitable for regular use can affect where the test should be placed.
Follow the technician's closed-house instructions and leave the monitor undisturbed for at least 48 hours. Tell cleaners, tenants and contractors about the test schedule.
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
