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Radon testing

Radon Testing in Falls Church, 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 City of Falls Church

Schedule a radon test Call (703) 450-6398

What our customers say

From our Google reviews.

The whole experience was amazing! Everything was handled so professionally, quickly and so easy to have our house tested for radon.

Was professional and friendly and provided us with immediate information about our radon test. I would highly recommend this company.

How much does radon testing cost in 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

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 Falls Church.

Falls Church radon testing starts with the exact address

A Falls Church mailing address can be inside the independent City of Falls Church or in Fairfax County. The City provides an address finder because postal wording alone does not establish the jurisdiction. Confirm the property location before applying a county radon map; neither a map label nor a nearby home's result is a measurement of the booked residence.

For radon testing in Falls Church, show the technician the lowest room that could be used regularly, including a lower den, future bedroom or office. In Broadmont or near Broad Street, use the home's present interior rather than assuming its layout from neighborhood or historic context. For an apartment, condo or separately occupied space, give the precise unit and an authorized contact for both visits. Select a period when the monitor can remain undisturbed.

Local background: City of Falls Church address finder, Virginia Department of Health EPA radon map, EPA radon-zone purpose and limitations.

Verify the City boundary

Use the City's address finder for a Falls Church mailing address before calling it a City property.

Broadmont and Broad Street

Describe the residence's actual lower rooms and any planned regular use.

Apartment or rental access

Confirm the exact unit, occupant permission and a reliable pickup contact.

Where we test in Falls Church, and what to tell us

City of Falls Church (The Little City)
Inside the City of Falls Church, identify the booked dwelling and its lowest potentially regular-use room.
Broadmont, Falls Hill
For Broadmont or nearby City streets, tell the team about connected additions and current floor-plan changes.
Sleepy Hollow, West Falls Church
For a Falls Church postal address in Fairfax County, supply the full street address and correct jurisdiction.

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 Falls Church

Nearby

Radon testing in Falls Church, answered straight

Is every Falls Church mailing address inside the City of Falls Church?

No. Fairfax County areas also use Falls Church postal addresses. Supply the complete address so the appointment record uses the correct locality.

Does a Falls Church historic designation change the radon result?

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.

What should be ready before testing a city condominium unit?

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.

What transaction dates should a Falls Church buyer provide?

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 a radon test in Falls Church

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