Radon Testing in Baltimore, MD
Radon is the #1 cause of lung cancer in non-smokers — and it is invisible, odorless, and undetectable without testing. Protect your family with a certified radon measurement today.
lung cancer deaths from radon annually in the US
EPA action level — mitigation strongly recommended above this
US homes have elevated radon levels above the EPA action level
What Is Radon — And Why Maryland Homes Are at Risk
Radon is a naturally occurring radioactive gas produced by the decay of uranium in soil and rock. It seeps up through the ground and enters homes through foundation cracks, sump pits, floor drains, and construction joints — then gets trapped inside.
Maryland sits on geology with elevated uranium concentrations, making it one of the higher-risk states in the Mid-Atlantic. The Baltimore metro area, Anne Arundel County, and the surrounding region all have documented elevated radon readings in residential properties.
You cannot see, smell, or taste radon. The only way to know your home’s radon level is to test.
EPA Radon Level Guide
The average indoor radon level is about 1.3 pCi/L. The average outdoor level is 0.4 pCi/L.
Our Radon Testing Process
We follow strict EPA measurement protocols to ensure accurate, defensible results you can act on.
Schedule and Prepare
We confirm your appointment and provide preparation instructions. Closed-house conditions (windows and exterior doors closed) must be maintained for at least 12 hours before and during the test.
Place Certified Test Devices
We deploy calibrated, continuous electronic radon monitors or EPA-approved short-term devices in the lowest livable area of the home — typically the basement or first floor.
48-Hour Measurement Period
The test runs for a minimum of 48 hours, capturing continuous radon readings. Closed-house conditions must be maintained throughout the testing window.
Device Retrieval and Analysis
We retrieve the testing devices and immediately analyze or send to an accredited laboratory. Electronic monitors display results on-site; lab-based devices return results within 24-48 hours.
Written Report Delivery
You receive a written report showing your radon concentration in picocuries per liter (pCi/L), how it compares to EPA guidelines, and clear recommendations for next steps.
Mitigation Guidance if Needed
If levels exceed 4 pCi/L, we explain your mitigation options and can refer you to a licensed Maryland radon mitigation contractor. Most systems cost $800-$2,500 and are highly effective.
What’s Included in Your Radon Test
Every radon test includes everything needed to get a complete, certified measurement.
- EPA-protocol short-term radon measurement (48-96 hours)
- Certified, calibrated testing equipment
- Closed-house condition guidance sent before testing
- Lowest-livable-level placement per EPA standards
- Written report with pCi/L results and EPA comparison
- Same-day or next-day results (electronic monitors)
- Plain-language explanation of what results mean
- Mitigation referral if levels exceed action level
- Add-on available: combined with full home inspection
When to Get Tested
The EPA recommends radon testing in every home. These situations make it especially important:
Buying a Home
Order radon testing during your inspection contingency period so you can negotiate for mitigation if needed.
Selling a Home
Know your levels before listing. A clean radon report is a selling point; a mitigation system already in place is even better.
New Construction
Even new homes can have elevated radon. Test before move-in or during the first year of occupancy.
Never Tested
The EPA recommends testing every home. If you have never tested, schedule a measurement regardless of home age.
Why Baltimore Homeowners Choose Us
We are not a lab-kit-in-a-bag service. We are certified inspectors who follow strict EPA protocols and give you results you can trust.
Certified and Independent
We are certified Maryland home inspectors. Our radon measurements follow EPA protocol — not shortcuts.
Fast Turnaround
Electronic monitors provide same-day results. We never make you wait a week to find out if your home is safe.
Clear Reporting
Your report is written in plain English with an unambiguous recommendation — no jargon, no guesswork.
Real Estate Ready
Our reports meet Maryland real estate transaction standards and are accepted by buyers, sellers, and lenders.
Bundle and Save
Add radon testing to your general home inspection for the most cost-effective way to evaluate a property. Standalone radon testing is $200; bundled with a residential home inspection, it’s $175.
Serves All of Maryland
Baltimore City, Baltimore County, Anne Arundel, Howard, Harford, Carroll, Montgomery and Prince George’s counties.
Ready to Know Your Home’s Radon Level?
Radon testing is fast, non-invasive, and the only way to know for sure. Schedule your certified test today.