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Radon testing

Radon Testing in Greenbelt, MD

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 Prince George's 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.

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 Greenbelt?

A radon test in Greenbelt 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 listed rate covers one Greenbelt residence. Identify the unit and building at booking, and request another scope when a second dwelling also needs its own result.

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 Greenbelt.

Radon testing for Greenbelt homes, co-ops and apartments

A Greenbelt radon test needs to measure the particular residence, whether it is a cooperative home, apartment, townhouse or detached house. Prince George's County radon data and a neighboring unit's reading cannot establish the level inside yours. Describe the lowest room in the home that is or could be used regularly, including a lower bedroom, office or family area. If another dwelling shares the building, identify the exact unit that needs the report.

For a Greenbelt appointment, provide the full address, building and unit number, and a person authorized to admit the technician for placement and collection. A co-op board, leasing office or building desk may need advance notice for both visits. The monitor stays undisturbed for at least 48 hours while occupants follow closed-house instructions. Discuss any cleaning or repairs near the test room, and give a purchase deadline early enough for collection and the written report.

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

A person fishing at a wooded lake

01

Test the actual unit

Another Greenbelt residence cannot supply this home's result.

02

Prepare lower rooms

Describe a room used or planned for regular occupancy.

03

Arrange two entries

Confirm board, desk or resident access for placement and pickup.

Where we test in Greenbelt, and what to tell us

  • Original Greenbelt

    For a co-op home, identify the private dwelling and entry contact.

  • Springhill Lake

    Give the apartment and leasing-office instructions for both visits.

  • Greenbelt Station

    Confirm building, unit and any lobby or garage entry procedure.

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 Maryland

Maryland's residential disclosure framework includes radon among the hazardous or regulated materials covered by an owner's actual knowledge for certain single-family residential property of four or fewer units. The statute has enumerated exemptions and does not itself require a radon test. County and municipal requirements may differ, so check the rules for the property's location and type before relying on an existing result.

Md. Real Property section 10-702. Current as of September 2026. General information, not legal advice.

Radon testing near Greenbelt

Radon testing in Greenbelt, answered straight

Can my Greenbelt co-op use a neighbor's radon result?

No. A neighboring home does not measure your indoor air. Test the particular residence that needs the result.

Which room should be available for a Greenbelt test?

Tell the technician about the lowest room used or suitable for regular occupancy, including a lower room a buyer plans to use.

Who arranges entry to an apartment?

Provide an authorized contact and any building or leasing-office instructions for both monitor placement and collection.

Can maintenance work continue during the measurement?

Avoid work that disturbs the device or closed-house conditions. Discuss unavoidable work with the testing team before booking.

Book a radon test in Greenbelt

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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