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Home/Radon Testing/Montgomery County/Kensington, MD
Radon testing
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
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
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
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
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.
Montgomery County is EPA Zone 1. The category estimates county potential and cannot provide a Kensington property's result. Test the individual residence. Describe the lowest level that could support routine occupancy and distinguish a private unit from retail, service or shared building areas.
The Town of Kensington redevelopment page, checked September 9, 2026, describes Knowles Manor as an approved 135-unit senior-housing project whose plan incorporates two existing historic buildings for retail or service use. Before requesting a test there, confirm that the specific residence exists, is ready for measurement and has an authorized access contact. At another existing Kensington home, provide the current address, dwelling and entry authority. A senior residence or mixed-use setting requires the operator to define the residential unit or facility area, while a house appointment should identify lower rooms and any separate living quarters.
Local background: Town of Kensington redevelopment page, Knowles Manor approval checked September 9, 2026, Maryland Department of Health radon guidance, EPA Map of Radon Zones.
01
Before booking at the approved project, verify that the specific residence is complete and ready for ordinary measurement conditions, then identify the authorized access contact.
02
Identify the home, unit or authorized facility area. Retail, service and common rooms are not automatically part of a residential measurement.
03
An operator or lawful representative must coordinate access and occupant needs. A general visitor cannot define facility-wide testing scope.
Where we test in Kensington, and what to tell us
Kensington Heights and Homewood
A neighborhood label does not define the interior. Provide the precise dwelling, its potentially occupied lower rooms and the person responsible for access.
Rock Creek Hills and Parkwood
Creek-related geography is not an indoor reading. Test the address and protect the selected room from renovation, moving or repeated visitor traffic.
Chevy Chase View
Verify the Kensington service address despite nearby locality names. For attached or managed housing, include the unit and entry process for setup and pickup.
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.
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.
Testing can proceed when the specific residence is complete enough to maintain ordinary measurement conditions and an owner, operator or other authorized person can provide access for placement and retrieval.
Identify the exact residence and authorized rooms, then provide management entry for both visits. Retail, service and common areas require separate scope.
The resident, operator or other lawful representative must authorize the relevant unit or facility area and coordinate access consistent with occupant needs.
No. Geographic naming does not supply an indoor concentration. Use the result measured in the specific Kensington residence.
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
