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Home/Mold Testing/Calvert County, MD
Mold testing
Samples taken in your home, analysed by an accredited laboratory. We do not sell remediation, so the report has nothing to sell you.
4.9 rating, over 4,000 reviews NAMRI-certified inspectors Serving all of Calvert County
Schedule a mold test Call (703) 450-6398 Find your community
One community in the county has a page of its own with local detail. The packages, the prices and the laboratory are the same across the county, so you can book from either page.
Old Town's early buildings sit near newer construction spreading out along the MD 2/4 corridor toward Dares Beach Road.
Prince Frederick is the county seat and the only Calvert County community with its own page today; the same team, packages and prices cover the rest of the county's shoreline towns from Chesapeake Beach to Solomons.
Four options, depending on how much of the home you need looked at. Not sure which one fits? Start with the thirty minute visit and a technician will tell you what is actually worth testing. Decide to test while they are there and the visit is written up as a Mold Plus.
No sampling
"Something feels off and I do not know if testing is worth it."
$175
30 minutes on site
One area, tested
"I can see it, or I know exactly where to look."
$345
One targeted area, 1 to 2 hours
One area, plus the source
"There was a leak and I want to know where the water went."
$495
One targeted area, 1 to 2 hours
The whole home
"It could be anywhere, or it keeps coming back."
From $550
Priced by home size, 1 to 2 hours
* Prices shown are for Virginia and Maryland. In Washington DC, Mold Basic is $425, Mold Plus is $575, and Mold Advanced starts at $630. Mold Walk & Talk is $175 everywhere.
Calvert County runs as a narrow peninsula between the Patuxent River and the Chesapeake Bay, and its housing follows that shape. Prince Frederick grew up as the courthouse town at the county's midpoint, with newer construction spreading along the MD 2/4 corridor that runs the length of the peninsula. Older farms and waterfront cottages sit closer to the shoreline in Solomons, Chesapeake Beach and the county's other river and bay towns, while inland lots away from the water tend to be newer. A booking anywhere in the county starts from the house's age, its foundation, and how close it sits to the water.
The state's own geological survey describes the Calvert Cliffs along the county's Chesapeake shoreline as reaching up to 100 feet high and built from Miocene-age layers of sandy clay, sand and marl. Away from the bluffs, the county's peninsula shape keeps groundwater close to the surface across much of its low, level ground, so a crawlspace or a below-grade room does not have far to go before it meets standing water. On that ground, a technician looks at crawlspace ground cover, the grading around the foundation, and whether a sump pump has kept up during heavy rain.
Local background: Maryland Geological Survey: Calvert Cliffs Fossils (1973).
01
The state's geological survey describes the county's Chesapeake bluffs as built from layers of sandy clay, sand and marl that erode and slump under wave action. A house set back from an eroding bluff edge can still have a crawlspace or a foundation affected by that same shifting ground, and the report notes any visible slope movement near the house itself.
02
Much of Calvert County sits on level, low-lying ground between two bodies of water, and a crawlspace here often sits close to the water table for most of the year. Ground cover, vent placement and standing water are checked and photographed as part of every visit, and the report says exactly what was found underneath the house.
03
Some of the older cottages along Calvert's shoreline towns were built for seasonal use and later enclosed or expanded for year-round living, often without changing the crawlspace or vapor barrier underneath. A technician notes when a room was clearly added after the original construction, and the report separates that addition from the rest of the house when the results differ.
We do not remove mold, so we have nothing to gain from your results. If your report shows a problem, you choose who fixes it. Once the work is done, we can test again and tell you what we find.
For a Maryland property, define the question before ordering samples: a particular stain, persistent odor, water event or follow-up after repairs. Keep dated observations and laboratory findings with the repair history. A report does not determine health risks, insurance coverage or legal responsibility. Montgomery County also publishes separate radon requirements for covered home sales; confirm which rules apply to your transaction.
EPA sampling guidance; Montgomery County radon guidance. Current as of September 2026. General information, not legal advice.
Yes. The same team, packages and prices book anywhere on the peninsula, from Prince Frederick's courthouse area out to Chesapeake Beach, Solomons and the towns in between, even though Prince Frederick is the only community with its own page today.
No. Many roads in Calvert County carry the postal name of the nearest post office rather than the unincorporated place people call it locally. Give us the full street address and the report will reflect the correct county and location, whatever town name appears on your mail.
No. A shoreline lot with water close to the surface calls for a different look than an inland lot on higher ground away from the Patuxent or the bay. The visit is built around the specific room, foundation type and history described at booking, not a general assumption about the peninsula.
Real openings for the peninsula show on the booking calendar the same way they do everywhere else we serve. If the property is part of a pending sale, note that timeline in the booking comments so the visit and the laboratory work can be arranged accordingly.
Real availability on the next screen. No call back required.
Schedule a mold test Request a price
NextDay Inspect
46179 Westlake Dr, Ste 200, Sterling, VA 20165
(703) 450-6398
