Radon Testing in Bethesda, Maryland
Need a radon test in Bethesda? RADON & CO provides fast, NRPP-certified 48-hour radon testing for homeowners, real estate transactions, rentals, property managers, and commercial projects.
Radon testing from downtown high-rises to Edgemoor's tree-lined streets
Bethesda's radon testing needs split fairly cleanly along its skyline. Downtown, around Woodmont Triangle and Bethesda Row, testing usually means a unit in one of the luxury high-rise condo buildings that have defined the neighborhood since the early 2000s — buildings like Cheval, Lionsgate, and the original Edgemoor on Montgomery, which introduced high-rise condo living to an area that had been single-family homes for decades before it. A few blocks off the retail core, in Edgemoor and the surrounding residential streets, the housing reverts to detached single-family homes, many built well before the high-rise boom.
The distinction matters for compliance, not just style: Montgomery County's mandatory pre-sale radon testing law applies to detached homes and townhomes, but condominium and cooperative units are specifically excluded — so a downtown Bethesda condo sale doesn't legally require a test, while a single-family home a few blocks away does. RADON & CO tests either kind on request, placing the monitor on the lowest livable level and running the standard minimum 48-hour closed-house test.
Pricing
Residential radon testing in Bethesda is $125 flat rate (Montgomery County pricing), including monitor placement, the 48-hour test, pickup, and an electronic report.
Services in and near Bethesda
- Residential radon testing
- Real estate radon testing
- Rental property testing
- Commercial radon testing
- Property manager and portfolio testing
Nearby areas we also serve
How the 48-hour test works
We schedule the appointment, place a professional digital radon monitor, measure during the testing window, retrieve the device, and deliver an electronic report.
Do downtown Bethesda condos need a radon test before they can be sold?
Not legally. Montgomery County's mandatory pre-sale radon testing law applies to detached single-family homes and townhomes, not to units that are part of a condominium regime or cooperative housing corporation — which covers most of downtown Bethesda's high-rise buildings. Testing is still available for any unit on request.