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Radon testing

Radon Testing in Dundalk, 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 Baltimore 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 Dundalk?

A radon test in Dundalk 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 home-test rate applies to one Dundalk residence. Book online or call to confirm scope for a separate unit or an address with more than one household.

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 Dundalk.

Radon testing for Dundalk homes and rowhouses

A Dundalk radon test should measure the particular residence you own or plan to buy. A Baltimore County map and another rowhouse's result cannot establish the level inside yours. Tell the technician about the lowest room that is or could be used regularly, including a basement bedroom, office or family area planned after purchase. In a divided building, identify the actual unit needing a report so the measurement is scoped to that dwelling.

For a Dundalk appointment, provide the full address and a person authorized to open the home when the monitor is placed and collected. It stays in place for at least 48 hours. Residents should follow closed-house instructions and avoid moving the device. If a tenant, agent or separate basement apartment affects access, discuss that before booking. Buyers should allow time for collection and the written report before a contract deadline.

Radon testing guidance: Maryland Department of Health radon guidance, EPA radon-zone map guidance, EPA guide for home buyers and sellers.

Riverside rowhouses reflected in the water

01

One dwelling's result

A nearby Dundalk rowhouse or map cannot measure this home.

02

Describe the basement

A lower room planned for regular use can affect placement.

03

Plan both visits

Arrange entry for setup and pickup after at least 48 hours.

Where we test in Dundalk, and what to tell us

  • Original Dundalk streets

    For a rowhouse, describe the present lower-level layout.

  • St. Helena

    Identify the exact dwelling if a building contains more than one unit.

  • Turner Station

    Coordinate occupants or an agent for placement and collection.

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 Dundalk

Radon testing in Dundalk, answered straight

Can another Dundalk rowhouse's radon result answer for mine?

No. A nearby measurement does not establish your home's indoor level. Test the residence itself for a property-specific result.

Which room matters in a Dundalk rowhouse?

Tell the technician about the lowest room used or suitable for regular occupancy, including a basement room a buyer plans to use. The technician selects placement under the testing protocol.

Can one test cover a separate basement apartment?

A standard appointment covers one residence. Identify a separately occupied unit before scheduling so its testing scope, access and price can be confirmed.

What if the home is occupied during the test?

Tell residents the schedule and closed-house instructions. Keep the monitor undisturbed for at least 48 hours and arrange access for collection.

Book a radon test in Dundalk

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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