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Radon testing

Radon Testing in Arlington, 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 Arlington County

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What our customers say

From our customer reviews.

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

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

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

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

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

Elizabeth Anne NewberryCustomer review
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How much does radon testing cost in Arlington?

A radon test in Arlington 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 Arlington home or unit. Book online or call with the exact address, unit and access contact when the property is attached, rented or managed.

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.

National Radon Safety Board

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 Arlington.

Radon testing for Arlington houses, townhouses and condos

An Arlington radon test should measure the particular home or private unit that needs a result. The EPA's Arlington County zone describes area potential; it cannot tell you the indoor level at your address. For a house or townhouse, describe the lowest room used or suitable for regular occupancy, including a basement office or bedroom planned after purchase. A technician can then choose the test position under the measurement protocol. A neighboring home's reading cannot replace a test of yours.

For an Arlington condo or apartment, give the building and unit number rather than a common-area location. In a managed building near Rosslyn, Clarendon or Shirlington, arrange desk, elevator or parking access for both monitor placement and collection. In a house, identify who can open the property twice and keep the selected room available. Occupants should follow closed-house instructions while the monitor remains undisturbed for at least 48 hours. Share a purchase or lease deadline before booking so the report can fit the schedule.

Radon testing guidance: Virginia Department of Health testing guidance, EPA radon-zone guidance.

01

Measure the actual home

A county radon zone or a nearby home's result does not measure the booked Arlington residence.

02

Describe lower rooms

Tell the technician about rooms used now or planned for regular use after a purchase.

03

Arrange both visits

For a condo, provide the private unit and building-entry instructions for placement and pickup.

Where we test in Arlington, and what to tell us

  • Rosslyn and Clarendon condos

    Give the exact unit and confirm front-desk, parking or elevator access for both visits.

  • Westover and Arlington Ridge houses

    Describe the lowest usable room and any planned basement use.

  • Shirlington-area rentals

    Coordinate the resident or manager who can admit the technician and protect the monitor.

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 Arlington

More on this service

Radon testing is available on its own or as an optional home-inspection add-on. Confirm your selected services, property access and testing dates with our team.

Radon testing in Arlington, answered straight

Does Arlington County's radon zone tell me my home's level?

No. The zone estimates area potential. Only a test inside the particular residence provides its indoor radon result.

Which level should be tested in an Arlington townhouse?

Describe the lowest room used or suitable for regular occupancy, including a basement room planned for use after purchase. The technician selects the position under the testing protocol.

Can an Arlington condo use a common-area radon result?

A common-area reading does not establish the level inside a private unit. Give the exact building and unit that needs a result.

What access should I arrange for a managed Arlington building?

Provide the unit number, an authorized contact, and any desk, elevator or parking instructions for both monitor placement and collection.

Book a radon test in Arlington

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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