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Radon testing

Radon Testing in Kensington, 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 Google reviews.

The whole experience was amazing! Everything was handled so professionally, quickly and so easy to have our house tested for radon.

Was professional and friendly and provided us with immediate information about our radon test. I would highly recommend this company.

How much does radon testing cost in Kensington?

A radon test in Kensington 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 Kensington home or unit. Book online or call to confirm facility, mixed-use or multi-unit scope with an authorized contact.

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 Kensington.

Radon testing for Kensington homes and private units

A Montgomery County radon map cannot tell a Kensington owner or buyer the indoor level of a specific residence. Test the house, townhouse or private apartment that needs a result. Describe the lowest room used or suitable for regular occupancy, including a basement office or future bedroom. If the building has shops, shared facilities or more than one dwelling, identify the residential unit rather than assuming one measurement covers the entire property.

For a Kensington appointment, provide the complete address, unit number and a contact authorized to open the home for both visits. In managed or senior housing, confirm with the resident or operator who can authorize entry and whether the space is ready for an undisturbed test. The monitor stays in place for at least 48 hours under closed-house instructions. Discuss work in the test area and any contract deadline before scheduling collection and the written report.

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

The Washington D.C. Temple in Kensington

Measure the residence

A county map or another Kensington unit cannot replace its result.

Define the unit

Separate private living space from retail or common areas.

Authorize access

Arrange a responsible contact for placement and pickup.

Where we test in Kensington, and what to tell us

Kensington Heights and Homewood
Describe the lowest room suitable for regular use.
Rock Creek Hills and Parkwood
Give current basement use and any planned change.
Chevy Chase View
Coordinate the owner, resident or agent for two visits.

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 Kensington

Nearby

Radon testing in Kensington, answered straight

Can a Montgomery County map tell me my Kensington level?

No. It describes area potential, not the indoor air of one home. Test the residence itself.

Can a mixed-use building use a shop or hallway reading?

That reading does not measure a private residence. Provide the exact unit needing the report.

Who can arrange a test in managed senior housing?

Confirm an authorized resident or operator contact, the unit, and access for placement and collection before booking.

Does an unfinished lower room matter?

Tell the technician if that room could be used regularly. Intended use can affect the appropriate test level.

Book a radon test in Kensington

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