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SERVICES
Radon Testing in Massachusetts & Rhode Island
Radon Testing for Buyers and Homeowners in MA & RI
Radon is an odorless, invisible radioactive gas that can seep into homes from the soil. It's one of the leading causes of lung cancer in the U.S., responsible for thousands of deaths each year. The only way to determine if your Massachusetts home has unsafe levels of radon is through professional radon testing.
Inspections Plus tests with calibrated monitors and gives you a written result. If the level is elevated, the report explains the next step.
Why Radon Testing Matters in Massachusetts
Massachusetts has many areas with naturally elevated radon levels. Contributing factors include:
Older homes with cracks or gaps in foundations.
Finished basements are especially vulnerable.
Cold winters, when homes are sealed tightly, trapping radon inside.
Soil conditions in central and western MA are known for higher radon concentrations.
Because radon is undetectable without testing, even safe-looking homes can pose serious risks.
Soil gas carrying radon
Left, no system: soil gas carrying radon comes in through openings at the lowest level. Right, a sub-slab system: a fan pulls the gas from under the floor and vents it above the roof. Not every house has every opening. Only a test shows the radon level.
1
Floor cracks
Soil gas comes up through cracks in the concrete floor.
2
Floor-wall joint
The gap where the floor slab meets the foundation wall.
3
Foundation walls
Cracks, gaps around pipes, and porous concrete or block.
4
Sump pit
An open sump lets soil gas straight in.
5
Suction point
A pipe through the sealed floor pulls soil gas from under the slab.
6
Gauge
Shows the system is pulling.
7
Fan
Outside the living space.
8
Above the roof
The pipe ends above the roof edge.
What's Included in Our Radon Testing Service
Placement of calibrated, tamper-resistant devices on the lowest livable level of your home.
Short-term monitoring.
When you schedule a radon test with Inspections Plus, here's what to expect:
Controlled test conditions (windows closed, HVAC managed) to ensure reliable readings.
A detailed written report showing radon levels, delivered quickly.
Guidance on next steps, including mitigation recommendations if levels exceed the EPA action threshold of 4.0 pCi/L.
During Your Radon Test
The test equipment stays in the home for the length of the test. Closed-house conditions must be maintained until the equipment is picked up. Open windows, open doors and fans that pull in outside air can change the reading.
Keep all windows closed.
Keep all exterior doors closed, except for normal entry and exit.
Do not touch, move or cover the testing equipment.
Central heating and air conditioning can be operated normally. Window AC units must run in “re-circulate” mode.
Do not run whole-house fans or window fans.
Failure of occupants to maintain the above closed-house conditions may result in associated costs for accurate re-testing to be performed in closed-house conditions.
Questions during the test? Call or text (508) 293-1770.
Common Issues Uncovered
During testing, we often find radon levels above recommended safety limits in homes across Massachusetts—even in areas where residents didn't expect it. High radon levels are widespread in:
Homes with finished basements are used as living spaces.
Properties near rocky soil formations.
Older homes with porous foundations.
Benefits of Professional Radon Testing
Health Protection
Reduce long-term cancer risks for your family.
Real Estate Transactions
A documented result for the inspection contingency.
Negotiation Power
Buyers can request mitigation, and sellers can resolve concerns before closing.
A Known Number
Know the radon level in the house.
Why Choose Inspections Plus
Experienced
In the field full time since 2009 in Massachusetts and Rhode Island.
Accurate Results
Calibrated monitoring equipment.
Clear Communication
We explain findings in plain language.
Fast Reporting
Results are usually sent the day the test ends.
Trusted by Clients
ASHI Certified Inspector with a reputation for thoroughness and integrity.
Schedule Your Massachusetts Radon Test Today
Call 508-293-1770 to schedule a radon test with Inspections Plus.
You can also use our online booking page to schedule your radon testing service today.