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Radon testing

Radon Testing in Vienna, 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 Fairfax County

Schedule a radon test Call (703) 450-6398

What our customers say

From our customer reviews.

They conducted the test right away and kept me informed every step of the way.

They arrived the day after I called, on time, set up the Radon test and left within 5 minutes.

Everything was handled so professionally, quickly and so easy to have our house tested for radon.

They found elevated radon in the home and numerous issues on the home inspection report which were remedied before I moved in.

Great service, very thorough inspection and highlighted items in a very approachable and organized manner.

How much does radon testing cost in Vienna?

A radon test in Vienna 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 price covers one Vienna home or unit. For an attached or multifamily address, book online or call with the exact unit and the person who can provide access for placement and retrieval.

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 Vienna.

Radon testing for Vienna homes

Fairfax County reports that radon levels can differ among nearby homes, so its map cannot answer for one Vienna address. A new house or rebuilt home also needs a measurement after construction; age alone does not reveal its indoor level. Test the finished residence that people will occupy. Tell the technician about a lower bedroom, office or family room that is used now or may be used regularly after a move.

For a Vienna test, provide the full street address, the exact unit if there is more than one dwelling, and a contact for placement and collection. The monitor remains in place for at least 48 hours. Choose dates after major work in the test area is complete, follow closed-house instructions and leave the device undisturbed. If an older radon report predates a renovation or changed use of a lower level, ask whether a new measurement is appropriate.

Radon testing guidance: Fairfax County Health Department radon guidance, EPA guidance on when to retest, EPA radon guidance for buyers and sellers.

New or rebuilt still needs a result

Test the completed Vienna home rather than assuming construction age predicts radon.

Lower rooms matter

Describe space planned for regular work, sleep or family use.

Check old reports

Discuss retesting when a renovation or use of the lower level has changed.

Where we test in Vienna, and what to tell us

Dunn Loring Woods and Wolftrap Meadows
Identify the home's own lowest regularly usable room.
Beulah Road and Westwood area
Arrange owner or agent access for placement and collection.
Tysons Green and newer infill
Test the finished residence even if construction is recent.

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 Vienna

Nearby

Radon testing in Vienna, answered straight

Should a newly built Vienna home be tested?

Yes. Radon-resistant features and newer construction do not provide a measured result. Test the completed home to learn its indoor level.

When is an older Vienna radon report no longer enough?

A buyer may want a new result when the prior test is old, the home has been altered, or the lower level will be used differently. Discuss the earlier report and current layout when booking.

Which room is relevant if I plan a basement office?

Tell the technician that the lower room may be used regularly. The technician can review the finished layout and choose a suitable test location under the protocol.

How do I prepare the house for the test?

Arrange both visits, follow the technician's closed-house instructions and avoid moving the monitor during the minimum 48-hour measurement.

Book a radon test in Vienna

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

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