Skip to content
Home/Radon Testing/Montgomery County/Aspen Hill, 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 Aspen Hill 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 price applies to one Aspen Hill residence. Book online or call with the unit number and access contact when a landlord, condominium association or front desk controls entry.
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 Aspen Hill.
A Montgomery County map cannot determine the radon level in an Aspen Hill townhouse, detached home or condo. A measurement in the residence you are buying or occupying is the useful evidence. Tell the technician about the lowest room that could be used regularly. This can include a finished basement, a lower office or a room a buyer intends to finish, even if it is not used that way today.
Before an Aspen Hill appointment, provide the complete address, unit number if there is one, and access for both placement and collection. The monitor stays in place for at least 48 hours. Ask occupants to follow closed-house instructions and keep cleaners or contractors from disturbing the area. If a condo association controls building access or a seller has a tight contract deadline, coordinate those details before choosing the test dates.
Radon testing guidance: Maryland Department of Health radon guidance, EPA radon-zone map guidance, EPA guide for home buyers and sellers.
01
County or neighboring results cannot answer for one Aspen Hill home.
02
A planned lower living area may affect the proper test location.
03
Everyone with access should know the monitor must remain undisturbed.
Where we test in Aspen Hill, and what to tell us
Manor Woods and Aspen Hill Park
For a detached home, describe lower rooms and their planned use.
Flower Valley and Layhill
For an attached home, identify the booked residence and access contact.
Longmead Crossing
For a condo or managed entry, confirm access for both visits.
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.
Both need a measurement in the actual residence. Explain the lower rooms and how they are used so the technician can choose a suitable placement.
Give the building and unit number, association or desk instructions if relevant, and a contact who can admit the technician twice.
Testing ahead of a sale can give time to receive the report and address questions. If a contract is already pending, share its deadline when booking.
Tell the technician about the planned use. EPA guidance considers a lower level suitable for regular occupancy even when a buyer has not yet moved in or finished it.
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
