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Radon testing

Radon Testing in La Plata, MD

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 Charles County

Schedule a radon test Call (703) 450-6398

What our customers say

From our Google reviews.

The whole experience was amazing! Everything was handled so professionally, quickly and so easy to have our house tested for radon.

Was professional and friendly and provided us with immediate information about our radon test. I would highly recommend this company.

How much does radon testing cost in La Plata?

A radon test in La Plata 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 rate covers one La Plata residence. Book online or call with the address, unit and access contact, and request a separate scope for any additional dwelling.

Day 1

Drop-off

We place the monitor

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

The monitor does the work

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

We collect it, read it, and write it up

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 La Plata.

Radon testing for La Plata homes and lower levels

A La Plata house or townhouse needs its own radon reading. Charles County's map describes area potential, but it cannot establish the level inside an individual home. Tell the technician about the lowest room that is or could be used regularly, such as a basement bedroom, playroom or office planned after purchase. If the property includes an accessory apartment, identify which dwelling needs the test and whether both require separate results.

Give the La Plata testing team the full address, any unit designation, and an authorized entry contact for monitor placement and pickup. The device remains undisturbed for at least 48 hours while occupants follow closed-house instructions. A seller or agent should coordinate both visits with residents and avoid cleaning, moving or repairs near the monitor. Buyers should share their contract deadline early enough for collection and the written report.

Radon testing guidance: Maryland Department of Health radon guidance, EPA radon-zone map guidance, EPA guide for home buyers and sellers.

Test this house

A Charles County map cannot provide an address-level result.

Mention extra dwellings

An accessory apartment may need its own testing scope.

Protect the reading

Keep the monitor undisturbed for the full measurement.

Where we test in La Plata, and what to tell us

Clarks Run and King's Grant
Explain lower-level rooms planned for regular use.
Quailwood and Oak Grove Estates
Coordinate occupants or a listing agent for both visits.
Hickory Ridge and Steeplechase
Identify a separate unit before scheduling.

We only perform testing, not mitigation.

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.

Before you book in Maryland

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.

Radon testing near La Plata

Nearby

Radon testing in La Plata, answered straight

Does the Charles County radon zone predict a La Plata home?

No. The map summarizes area potential. A measurement inside the residence gives its property-specific result.

Can one test cover an accessory apartment?

A standard appointment covers one dwelling. Identify any separate apartment before booking so scope and price can be confirmed.

What should a seller arrange?

Provide access for placement and collection, tell occupants the closed-house instructions and avoid disturbing the monitor.

What if a buyer will use a basement room?

Tell the technician about that planned use. The lowest room suitable for regular occupancy can affect placement.

Book a radon test in La Plata

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