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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 Washington County
A radon test in Hagerstown 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. One Hagerstown residence is covered; supply unit, parking and entry instructions.
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 Hagerstown.
Washington County is EPA Zone 1; a Hagerstown address needs its own reading.
The City describes Oak Hill as an early-to-mid-20th-century residential historic neighborhood. That dated statement applies to Oak Hill only. City Center units, South Prospect homes and North End residences should use the current dwelling layout and access needs. A City Center unit may share a building with offices or shops, so state the residential entrance and apartment number and arrange any elevator or desk procedure. Near City Park, select dates without a major event, moving crew or contractor traffic through the test area. An Oak Hill owner can show the present interior layout without assuming that neighborhood history determines placement. In the North End, discuss a future lower-level bedroom or workroom even if it has not been furnished. Give every occupant the retrieval date and ask cleaners or maintenance workers to avoid the device. A buyer using a deadline should reserve time for deployment, the full interval, collection and reporting rather than scheduling only the first visit.
Local background: Maryland Department of Health radon guidance, EPA Map of Radon Zones.
01
The neighborhood period does not predict an individual reading.
02
Coordinate elevators, doors and the residential keyholder.
03
Choose dates when visitors will not disturb the device.
Where we test in Hagerstown, and what to tell us
City Center and Potomac-Broadway
In City Center, distinguish the apartment from adjoining commercial space.
South Prospect and City Park area
Near South Prospect or City Park, plan around events and contractor traffic.
Oak Hill and North End residences
At Oak Hill or the North End, do not use neighborhood age as a radon proxy.
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.
The test covers the selected residential unit, not the whole building.
Choose a quieter interval if an event would cause unusual entry or activity.
The lowest room that could be used regularly should be discussed.
No. Standard radon placement uses its current accessible layout.
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
