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Radon testing

Radon Testing in Alexandria, 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 Alexandria

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.

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 Alexandria?

A radon test in Alexandria 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 Alexandria 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 Alexandria.

Radon testing in Alexandria: an independent-city result

Alexandria is an independent city, and the EPA radon-zone data list it separately as Zone 3. That regional label is not a reading for a house or apartment: EPA and Virginia health officials recommend testing homes in every zone. A radon test in Alexandria should measure the actual residence, on the lowest level that could be used regularly.

City preservation records describe older houses in Rosemont, while Old Town and other Alexandria neighborhoods include different building and unit arrangements. Age, architectural style and a neighbor's result cannot establish indoor radon in your home. Tell the technician about a lower living room, connected addition or separate unit, and arrange access to the exact residence for placement and pickup.

Local background: Alexandria primary housing context, Virginia Department of Health radon guidance, EPA Map of Radon Zones.

Alexandria waterfront

01

Use Alexandria's own map entry

Alexandria has its own EPA zone row. Do not borrow a Fairfax or Arlington County label for a City of Alexandria address; test the residence itself.

02

Show the present interior

In an Old Town or Rosemont home, point out additions and the lowest room intended for regular use. Historic status does not choose the monitor location.

03

Confirm unit access

For a condo, rental or managed building, provide the building and unit number and a contact authorized to admit the technician twice.

Where we test in Alexandria, and what to tell us

  • Old Town Alexandria

    For an Old Town townhouse or apartment, confirm the entrance and the lowest regularly usable room before the two service visits.

  • Del Ray, Rosemont

    In Del Ray or Rosemont, describe the present basement or connected addition; the building's age does not predict a radon result.

  • Cameron Station, Potomac Yard, Potomac Greens, The West End

    For Cameron Station, Potomac Yard, Potomac Greens or the West End, supply the exact building and unit and keep the chosen room accessible.

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 Alexandria

Radon testing in Alexandria, answered straight

Does a Rosemont home’s age predict radon?

No. Rosemont’s documented building history provides neighborhood context, but age and architectural style do not establish an indoor concentration. Test the individual Alexandria home.

How is an Old Town unit tested?

Book the exact residence and arrange entry through the owner, tenant, agent or building manager. The technician evaluates the accessible unit and chooses a compliant location within that scope.

Can renovation continue during testing?

Schedule disruptive renovation outside the measurement period. Work that changes ventilation, requires repeated exterior-door use or risks moving the monitor can undermine the test conditions.

What if the lowest room is unused today?

Mention the room if it could be used regularly later as an office, bedroom, playroom or similar space. The technician considers potential regular use when selecting the measurement level.

Book a radon test in Alexandria

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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