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Home/Radon Testing/Loudoun County/Leesburg, 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 Loudoun County
A radon test in Leesburg 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 applies to one Leesburg residence. Give the exact address and unit plus any historic-district access constraints. Confirm the retrieval contact before setup.
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 Leesburg.
Virginia health guidance treats Loudoun County as high risk despite the older EPA map. A Leesburg home still needs its own test because the designation is not a property result.
The Town of Leesburg identifies a locally regulated historic district. That Town district has a defined scope and does not describe every Leesburg mailing address or building. Historic-district owners may need to coordinate tenants, businesses or contractors in addition to household occupants. Outside that district, the same address-specific testing principle applies. Across West Market, North King, Vinegar Hill, South King and Town Branch service bands, keep the selected room available and tell every person with access not to alter the monitor or test conditions.
Local background: Leesburg primary housing context, Virginia Department of Health radon guidance, EPA Map of Radon Zones.
01
District regulation supplies local context but neither predicts radon nor sets monitor placement.
02
Renovations over time make today’s accessible rooms more useful than assumptions based on age.
03
A mailing address outside Town limits should be identified precisely when the appointment is made.
Where we test in Leesburg, and what to tell us
West Market Street neighborhoods
Along West Market Street, coordinate testing around occupants and exterior work that may affect required conditions.
North King Street and Vinegar Hill
For North King Street or Vinegar Hill, show the technician the building’s current lowest regularly usable level.
South King Street and Town Branch area
Near South King Street or Town Branch, clarify whether the booking covers a house, apartment or separate living unit.
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. The technician follows the radon protocol using the building’s current accessible layout.
Provide the complete address; the historic-district statement will not be applied beyond its boundary.
No disruptive work should occur while the device is deployed.
The lowest room that could be used regularly matters, based on the present conversion and access.
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
