Invisible. Odorless. Important to know.

Protect the People You Love From a Risk You Can’t See.

Radon can be present in any home without warning. Our NRSB-certified specialists provide professional 48-hour radon testing so you can know what’s in the air your family breathes.

Same-day appointments · Same-day results after pickup · NRSB-certified
Continuous radon monitor Sampling
48-hour average
3.8pCi/L
0EPA 4.010+
Illustrative reading — not live data
A 5-Star Rated Companyby the homeowners, buyers and agents we serve across the DMV
NRSB-Certified Measurement
Serving DC, Maryland & Virginia
Same-day results after pickup
Real-estate transaction ready
The process

Three steps from question to answer.

No guesswork and no upsell. A certified measurement specialist handles the test; you get a plain-language report you can act on.

STEP 01

We place the monitor

A certified specialist sets a calibrated Airthings Pro continuous monitor in the lowest livable level of your home, following EPA measurement protocol.

STEP 02

It samples for 48 hours

The device logs radon hour by hour under closed-house conditions to capture natural fluctuation — far more reliable than a single snapshot reading.

STEP 03

You get a clear report

The same day we collect the monitor we send your averaged result, how it compares to the EPA action level, and honest guidance on next steps.

Why it matters here

Much of the DMV sits in a high-radon zone.

Radon forms as uranium in soil and rock breaks down, then seeps up through foundations. The granite and clay soils across our region make elevated readings common — and you cannot see, smell or taste any of it. Testing is the only way to know.

#2
Leading cause of lung cancer in the U.S., after smoking — per the EPA & Surgeon General.
21,000
Estimated radon-related lung cancer deaths in the U.S. each year.
4.0
pCi/L — the EPA action level at which mitigation is recommended.
Zone 1
Highest-potential EPA radon zone, covering many DMV counties.
Above the 4.0 line? We’ll explain your options.
Services

Testing built around your situation.

Whether you are closing on a house next week or just want peace of mind, there is a measurement made for it. Flat pricing by location — no hidden fees.

Homeowners

Peace-of-Mind Test

$189  from
  • 48-hour continuous monitor
  • Certified specialist placement & pickup
  • Plain-language digital report
Book this test
Most booked

Real-Estate Test

$189  from
  • Transaction-ready documentation
  • Closed-house protocol & tamper log
  • Report shared with your agent
Book this test
Commercial & new build

Commercial Testing

Quote  by request
  • Offices, schools, multi-family
  • New-construction verification
  • Multi-point sampling plans
Call 202-930-1797
Radon Testing DMV service area Schematic map of the Washington DC metropolitan area showing the counties we serve, all of which fall in EPA Radon Zone 1. Clarke Loudoun Ashburn · Leesburg Frederick MD Montgomery MD Bethesda · Rockville Baltimore MD Fairfax McLean · Vienna · Tysons Prince William Manassas · Woodbridge DC Arlington Alexandria N
EPA Radon Zone 1 Washington, DC Potomac River
Schematic — county outlines simplified, not to scale
Coverage area

Serving the whole DMV.

From Bethesda to Alexandria to the District — if you are inside our region, a certified specialist can be at your door this week.

◆ Every county we serve sits in EPA Radon Zone 1

District

Washington, DC

Maryland

Montgomery County

Frederick County

Baltimore County

Bethesda

Rockville

Silver Spring

Virginia

Fairfax County

Loudoun County

Prince William Co.

Arlington · Alexandria

McLean · Vienna · Reston

Tysons · Great Falls

Ashburn · Leesburg

Client story
Radon Testing DMV was fantastic. They came on time, explained everything clearly, and delivered the results fast. Professional, friendly, and very easy to work with. Highly recommend for anyone in Potomac Maryland, needing reliable radon testing.
Mahdi Po — Google review · Potomac, MD

Test today. Breathe easier tomorrow.

Book online in under two minutes, or call and we will find you a slot this week. Flat pricing, certified specialists, honest results.