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Radon testing

Radon Testing in Germantown, 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 Montgomery 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 Germantown?

A radon test in Germantown 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 rate covers one Germantown house, townhouse, apartment or condominium. Book online or call with the unit and access contact when another party controls entry.

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 Germantown.

Radon testing for Germantown homes and townhouses

A Germantown homeowner or buyer needs a result from the specific house, townhouse or condo. Montgomery County's map cannot predict its indoor radon level, and a neighbor's report does not measure it. Describe the lowest room that is or could be used regularly, including a lower bedroom, office or family area. If a townhouse has a separate rental apartment, identify the booked dwelling before scheduling.

For a Germantown radon test, provide the complete address, unit number if applicable and a contact for placement and collection after at least 48 hours. Residents should follow closed-house instructions and leave the monitor in place. Arrange any building or tenant access for both visits, and schedule around moving, cleaning or repairs that might disturb the test area. Buyers should share their contract deadline before choosing appointment dates.

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

Aerial view of a suburban neighborhood with a pond and tennis courts

Exact Germantown unit

A map or another residence cannot provide this home's reading.

Future basement use

Tell the technician about a lower room planned for occupancy.

Two access windows

Arrange entry for placement and pickup.

Where we test in Germantown, and what to tell us

Kingsview Village and Churchill Village South
For a townhouse, describe lower rooms and any separate unit.
Gunners Lake Village
For an occupied home, coordinate residents and testing conditions.
Clarksburg Ridge and Neelsville Estates
For a condo, give building and private-unit entry details.

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 Germantown

Nearby

Radon testing in Germantown, answered straight

Can a Germantown neighbor's result tell me about my townhouse?

No. An indoor radon reading belongs to the residence that was tested. Test your specific home for the relevant result.

What if a townhouse has a separate lower apartment?

Tell us before booking. A standard appointment covers one dwelling; a separate apartment may need its own scope and access.

How should residents prepare for the monitor?

Follow the technician's closed-house instructions, leave the device undisturbed and arrange access for collection after at least 48 hours.

When should a buyer book?

Share the contract deadline early enough for monitor placement, the minimum measurement period, collection and the written report.

Book a radon test in Germantown

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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