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Radon testing

Radon Testing in Manassas, VA

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 City of Manassas

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 Manassas?

A radon test in Manassas 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 Manassas City dwelling is covered; clarify units and agent access. In a sale, specify who receives the report and confirm that the independent City address appears correctly on the booking. Record any test interruption.

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 Manassas.

Radon testing for City of Manassas homes

A radon test in Manassas measures the home where people live; it does not rely on a county map or another property's result. Virginia health officials recommend testing all homes because elevated radon can occur across map categories. If you are buying, selling or simply checking your current home, tell us about the lowest room that could be used regularly, including a planned lower bedroom, family room or office.

Give us the full Manassas property address and clarify the exact dwelling if a building has more than one unit. The technician places a monitor and returns after at least 48 hours to collect it. Arrange an entry contact for both visits, follow closed-house instructions during the test, and avoid moving the device. For a real-estate transaction, schedule with enough time to receive the report before your decision or contract deadline.

Radon testing guidance: Virginia Department of Health radon guidance, EPA Map of Radon Zones.

Brick townhouses along a Manassas street

Answer for this property

Test the specific Manassas residence rather than relying on a map or past neighbor result.

Scope the dwelling

Identify the correct unit and any separately occupied lower space before booking.

Protect the reading

Keep the monitor in place and arrange access for the return visit.

Where we test in Manassas, and what to tell us

Old Town Manassas
For an Old Town Manassas building, specify the residential unit and its entrance.
Bristoe Station
For Bristoe Station, identify any lower room intended for regular use.
Wellington, Sudley and Westgate
For Wellington or nearby homes, coordinate occupants and contractors around the 48-hour test.

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 Virginia

Virginia's residential disclosure statute directs the seller's disclosure statement to say that the owner makes no representation about whether the property is in an EPA Zone 1 or Zone 2 locality. It directs buyers to use due diligence, including reviewing EPA, Virginia Department of Health and NRSB information and ordering a radon inspection before settlement as the contract allows.

Va. Code section 55.1-703. Current as of September 2026. General information, not legal advice.

Radon testing near Manassas

Nearby

Radon testing in Manassas, answered straight

Why does the Manassas jurisdiction matter when scheduling?

Manassas is an independent city rather than part of Prince William County. The complete address keeps the appointment tied to the correct locality while the indoor test answers the question for that residence.

Can attached homes share a result?

No. Each residence requires its own measurement.

Should Old Town repairs continue?

Pause disruptive work until after collection.

What should a buyer allow?

Allow time for both visits, the measurement interval and reporting.

Book a radon test in Manassas

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