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Home/Radon Testing/Fairfax County/Falls Church, 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 City of Falls Church
A radon test in Falls Church 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 service price applies to one Falls Church residence. A duplex side, accessory apartment or separately occupied lower dwelling is not added automatically and should be scoped in advance.
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 Falls Church.
Virginia Department of Health guidance calls for every home to be tested. Point out the lowest level that could be used regularly, including a lower den, future bedroom or separate occupancy, so the technician can select a position within the authorized scope.
The City of Falls Church reported locally designated historic resources and districts when checked on September 10, 2026. That citywide context does not establish a particular home’s age, construction or historic status. It also does not extend to every Falls Church postal address because many are in Fairfax County. Give the full address and governing locality before using city procedures or describing a neighborhood as inside the independent city.
Local background: City of Falls Church preservation context, checked September 10, 2026, Virginia Department of Health EPA radon map, EPA radon-zone purpose and limitations.
01
Use the complete parcel address to distinguish the independent city from surrounding Falls Church mailing areas. This prevents municipal context from being applied to a Fairfax County property.
02
If the specific property is locally designated, tell the team about any owner or manager rules affecting equipment location or entry. Do not assume designation from the neighborhood name.
03
Provide the association, tenant or listing contact who controls the booked residence. Clarify any lower space that the client cannot enter or is not authorized to include.
Where we test in Falls Church, and what to tell us
City of Falls Church (The Little City)
Inside the City of Falls Church, confirm that the address is actually within the independent city before using city-specific access or permit assumptions. Postal wording alone is not enough.
Broadmont, Falls Hill
Around Broadmont or Falls Hill, mention a lower finished room, walkout entrance or planned conversion during scheduling. These features are relevant to placement only after they are confirmed at the residence.
Sleepy Hollow, West Falls Church
For Sleepy Hollow or West Falls Church, first verify whether the home is in Fairfax County rather than the City of Falls Church. The booking should carry the correct locality and property contact.
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. Fairfax County areas also use Falls Church postal addresses. Supply the complete address so the appointment record uses the correct locality.
The city source only confirms that local designations exist; it does not establish a radon outcome. Mention designation when it creates a verified access or placement constraint.
Arrange unit authorization, entry for two visits and a clear location on the residence’s lowest regularly usable level. Ask management about equipment rules before setup.
Give the contingency expiration and latest useful reporting time. The scheduler needs both to assess setup, the minimum 48-hour interval, pickup and reporting.
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
