Protect Your Home. Protect Your Health.
Radon Testing in Maryland
Radon is an invisible, odorless gas — and the second leading cause of lung cancer in the United States, responsible for an estimated 21,000 deaths each year (EPA). Because it seeps into homes naturally through soil and foundation cracks, any home in Maryland — old or new — may be at risk.
That’s why radon testing is a critical step for buyers, sellers, and homeowners alike.
Why Radon Testing Matters
Silent, invisible
risk
Radon cannot be seen, smelled, or tasted. The only way to know if your home has unsafe levels is through testing.
Severe health
impact
Long-term exposure to high radon levels greatly increases lung cancer risk.
Maryland is a high-risk state
Many Maryland counties fall into the EPA’s Zone 1 category (highest risk for elevated radon).
Protect your family and investment
Whether buying, selling, or maintaining your property, a radon test provides peace of mind and, if needed, a path to mitigation.
Maryland Radon Risk Zones
According to the EPA Radon Map, parts of Maryland are at higher risk for radon exposure due to natural uranium deposits in the soil.
Counties with elevated risk (Zone 1):
- Frederick
- Carroll
- Montgomery
- Howard
- Baltimore County
- Washington County
Even outside these zones, radon has been found in homes across Maryland. Testing is recommended statewide.
What’s Included in Our Radon Testing
Laflamme Property Inspections provides professional radon measurement services using state-approved methods:
Continuous Radon Monitoring
(48+ hour test)
Digital reporting with clear, easy-to-read results
Guidance on EPA action levels
(4.0 pCi/L and above)
Case Study
Protecting a Family in Montgomery County
A young family buying a home in Rockville, MD, requested a radon test through Laflamme Inspections. Results showed radon levels of 7.2 pCi/L — nearly double the EPA action level. Because the issue was identified before closing, the sellers agreed to install a radon mitigation system valued at $1,500.
Result: The buyers moved in knowing their new home was safe, saving them thousands in future remediation costs.
5 Benefits of Radon Testing
Early detection of hidden
risks
identify elevated levels before they harm your family.
Peace of mind for buyers & sellers
demonstrate your commitment to health and safety.
Meet EPA
guidelines
comply with recommendations for testing in high-risk areas.
Negotiation advantage
buyers can request mitigation, or sellers can test proactively to avoid deal complications.
Fast, affordable protection
radon testing costs are small compared to the health and financial risks.
Cost vs. Risk
| Scenario | With Radon Testing | Without Testing |
|---|---|---|
| Identify dangerous radon levels | Yes | No |
| Protect family health | Yes | No |
| Avoid costly surprise remediation | Yes | No |
| Strengthen negotiations | Yes | No |
| Peace of mind | Yes | No |
FAQs
Frequently Asked Questions
The average test costs $200, depending on home size and duration.
Most tests run for 48 hours using continuous radon monitors.
If levels are above 4.0 pCi/L, we recommend remediation. Mitigation systems are effective and typically cost $800–$1,500.
Yes. Even homes outside EPA Zone 1 have tested high. The only way to know is to test.
Get Started
Schedule Your Radon Test
Don’t wait until it’s too late. Radon is invisible, but the risk is real. Testing today ensures peace of mind tomorrow.