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Home/Radon Testing/Montgomery County/Olney, 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 Olney 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 price covers one Olney home or unit. Book online or call with the exact premises and access instructions, including any separate household needing its own scope.
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 Olney.
EPA classifies Montgomery County as Zone 1, a planning forecast rather than an address result. An Olney household needs a measurement in its own residence. Tell the technician how the lowest accessible floor is used now and whether any room could support routine occupancy later. That account helps select the level without inferring a foundation from the surrounding planning area.
The approved 1980 Olney Master Plan distinguishes residential land-use, Town Center urban-design, rural-area and rural-community planning contexts. Those contexts make the complete service address useful, while the current property supplies the room and access details for testing. A Town Center unit may need management entry, and a rural address may need clear route or gate directions. Define the individual dwelling, name the keyholder and schedule both visits. Mention future use for a lower room, and choose an interval when contractors or movers will not disturb the monitor.
Local background: Montgomery Planning approved 1980 Olney Master Plan contexts, Maryland Department of Health radon guidance, EPA Map of Radon Zones.
01
Provide the complete service address, residence type, usable lower levels and access instructions. Those current details guide the appointment across Town Center and rural settings.
02
A private-lane instruction helps arrival, while a unit number or manager identifies the residence. Provide whichever facts actually apply.
03
Mention an unfinished room intended for work, sleep or recreation. The technician considers potential regular use, not only current furniture.
Where we test in Olney, and what to tell us
Fair Hill Farm and The Reserve at Fair Hill
Community names do not establish one layout. Describe the actual residence, its lowest potentially occupied room and who can grant entry on both visits.
Lake Hallowell
Water-related geography is not an indoor-radon conclusion. Test the home and keep the selected location away from disruption during the agreed period.
Olney Mill, Norbeck Grove and Tanterra
If a tenant suite or another living unit exists, identify the household included. Do not extend the main residence result across a separate occupancy boundary.
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.
Make the room accessible and explain whether it is used now or could later serve as a bedroom, office, gym or recreation area. The technician will confirm whether it is the appropriate measurement location.
Provide the complete street address, private-lane or gate directions and a reachable contact. Use landmarks only to supplement the service address.
Identify the exact unit, arrange any management or desk entry for both visits, and make its lowest regularly usable rooms accessible to the technician.
No. A nearby result belongs to the tested property. Use a measurement made in your residence for the household or transaction decision.
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
