Skip to content
Home/Mold Testing/Baltimore County/Dundalk, 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 Baltimore County
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.
Dundalk is Baltimore County, not the city line it sits against. Explore Baltimore Heritage records that Bethlehem Steel commissioned construction here in 1916, erecting roughly five hundred stucco and slate-roofed homes on tree-lined, curved streets shaped like a boat, with streets named for shipbuilding. The Dundalk Historical Society notes that the neighboring community of St. Helena predates it, built for shipyard boarders under that same 1916 push. Two planned communities from one era can still differ block by block in how they were built.
For a home on the original curved streets, describe whether the house is a semi-detached duplex or a single unit, and identify any bathroom or kitchen added since it was built for a steelworker family. Near the St. Helena line, tell us whether the house was part of the smaller housing built for shipyard boarders, since layouts there can differ from family homes built the same year. Toward Turner Station and Bear Creek, describe the foundation type and any history of high water, since construction there varies house to house rather than following one company plan.
Local background: Explore Baltimore Heritage: Dundalk Town Center, Dundalk Historical Society: Saint Helena.
01
A semi-detached home from the original construction push may share a foundation or roofline with its attached neighbor. Describe which side of the duplex is affected and whether the neighboring unit has had recent repairs that could be relevant.
02
Some St. Helena houses began as compact housing for shipyard boarders before later owners added kitchens or bathrooms of their own. Describe what was added, approximately when, and whether the current layout still reflects the smaller original rooms or a later renovation.
03
A Turner Station house may have gained additions over time, each with its own foundation or roofline. Note where Bear Creek's high water has reached in the past and how each section of the house was built, since construction here varies more than on the original company-built streets.
Where we test in Dundalk, and what to tell us
The original Dundalk Company streets
Identify whether the home is a duplex sharing a party wall or a single stucco house, and describe any bathroom or kitchen added since its original construction for a steelworker family.
St. Helena
Note whether the property was part of the smaller units built for shipyard boarders near the city line, since room layouts and later conversions can differ from the family houses built the same year.
Turner Station
Near Bear Creek, describe the foundation, any additions built by past owners, and whether the lower level or crawlspace has taken on water. Construction here varies house to house rather than following a single company plan.
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.
Mold Basic addresses one targeted area, which often suits a single room in a duplex. Mold Plus adds a moisture and thermal evaluation of that same area when the source is unclear. Describe which side of the shared wall is affected and whether the neighboring unit has had any recent leak or repair, since that context is useful.
It affects which jurisdiction handles permits or code questions, not how the visit itself is scoped. Describe your exact street and any nearby cross street so the office can confirm your service area and package. The technician assesses the accessible property regardless of which side of the line the house falls on.
Describe each addition separately, including roughly when it was built and whether it has its own foundation or ties into the original house. A stain near where an older section meets a newer one often has a different explanation than one in the middle of a single room. Any photographs of the exterior seam help.
Not automatically. Describe whether water has reached the yard, crawlspace or living area in the past, and how recently. That history helps determine whether a single targeted area or a broader whole-home evaluation makes sense. The technician assesses the accessible property rather than assuming a defect from the address alone.
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
