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Home/Mold Testing/Potomac, 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 Montgomery 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, with $80 added to every home-size tier. Mold Walk & Talk is $175 everywhere.
Montgomery Planning's 2002 Potomac Subregion Master Plan describes a shift from a rural, agricultural place to a semi-rural one, bounded by Seneca Creek to the west and the river to the south. That plan protected a network of rustic, two-lane roads to preserve the area's character even as Potomac Village continued to anchor daily life nearby. Large-lot properties along those roads sit beside newer development built on land once set aside for offices, so lot size and construction date vary widely here.
For a large-lot property along a rustic road, identify whether the home uses a private well and septic system, and note the location of any well house or drain field relative to the area of concern. Near Potomac Village, a residence may be older and closer to commercial space; describe that layout. In Park Potomac or another newer development, bring details of the building's completion date and any known window, roof or plumbing repair. For a wooded lot near Seneca Creek or the river, describe the grade of the yard and any history of standing water.
Local background: Montgomery Planning: Potomac Subregion, Montgomery Planning: 2002 Potomac Subregion Master Plan reality check.
01
A guest house, pump house or detached garage on a large lot can have its own foundation and roof separate from the main house. Describe each structure's use, its distance from the main house, and any odor or staining noticed in either building.
02
A residence built on formerly office-zoned land may reuse mechanical chases or roof penetrations from an earlier structure. Describe the building's history if known, and identify any shared wall, floor or ceiling with a neighboring unit or commercial space.
03
A lot that slopes toward Seneca Creek, the river or another stream can carry runoff toward the house instead of away from it during storms. Describe the grading pattern near your foundation and whether dampness follows heavy rain rather than a single event.
Where we test in Potomac, and what to tell us
Potomac Village
This established center anchors older homes nearby. Identify whether your property sits close to commercial space or shares a driveway or drainage feature with a neighboring lot, and describe the home's approximate age if known.
Park Potomac
This newer development sits on land once set aside for office use. Bring the building's completion date, note whether the unit is a townhome or condominium, and describe any known window, roof or plumbing repair since construction.
Rustic-road properties near Seneca Creek and the river
Large lots along these roads often rely on a private well and septic system. Identify the well house, pump room or drain field location, and describe any grading or drainage work near the foundation.
No version of your result is worth more to us than another one. If the report says you need work, you choose the remediator. A separate post-remediation assessment can document conditions after the work within its agreed scope.
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 Advanced is a whole-home scope rather than a single targeted area, which suits a larger house or one with more than one area of concern. Describe the property's size, any detached structures, and which rooms or areas prompted your call, and the office can help confirm whether a whole-home visit fits your situation.
A well itself is not part of a standard visit, but nearby plumbing and drainage can matter if the well house or supply line sits close to the area of concern. Describe the well's location relative to the house, any recent service, and whether dampness appears near where the line enters the building.
Yes. Describe the structure's use, how often it is occupied, and whether it has its own heating or plumbing. A detached building can be scoped as its own targeted area or included alongside the main house, depending on what prompted your question, so mention both when you call.
Bring any available records about the building's construction date and prior use of the land, along with your agent's or attorney's guidance on what a report can address before closing. Describe the specific unit and any observation that prompted your question, and the visit will address the accessible areas you identify.
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
