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Home/Radon Testing/Montgomery County/Silver Spring, 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 Silver Spring 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 listed price is for one Silver Spring residence. Identify the apartment or condominium unit and access contact when relevant. For a multilingual household or absentee owner, choose one contact who can relay test instructions to everyone entering the unit.
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 Silver Spring.
A Silver Spring radon result belongs to the particular Montgomery County residence being tested. A county map, neighboring house or building common-area reading cannot establish the level in a private condo, apartment or house. Tell the technician about the lowest room used or suitable for regular occupancy, including a basement office or bedroom planned after purchase. Name the exact unit if the building contains several dwellings.
For a Silver Spring appointment, provide the full address, building and unit number, and an authorized entry contact for monitor placement and collection. Downtown managed buildings may require desk, elevator, parking or lockbox procedures twice. Occupants should follow closed-house instructions while the device remains undisturbed for at least 48 hours. Share a sale or rental deadline in advance so the two visits and written report fit the schedule.
Radon testing guidance: Maryland Department of Health radon guidance, EPA radon-zone map guidance.
01
A Montgomery County map or another address cannot measure the booked Silver Spring residence.
02
Include rooms used regularly or planned for regular use after a purchase.
03
Arrange entry for placement and pickup, and keep the monitor undisturbed.
Where we test in Silver Spring, and what to tell us
Woodside and Four Corners
For a house, explain the lowest usable room and any planned basement use.
Downtown Silver Spring
Give the exact private unit and building-entry procedure for both visits.
Takoma Park and Wheaton edges
Use the complete street address and confirm who can admit the technician.
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.
No. The map describes area potential. Only a measurement inside the particular residence provides its indoor result.
Tell the technician about the lowest room used or suitable for regular occupancy, including a room planned for use after purchase. The technician selects the test position under the testing protocol.
No. Test the private residence that needs the result. Give its building and unit number when scheduling.
Confirm parking, desk or elevator access and a contact authorized for both placement and collection.
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
