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Home/Mold Testing/McLean, VA
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 Fairfax 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.
A McLean appointment may be for an established house, an expanded property or a recent rebuild. Provide the approximate floor area and the number of finished levels so whole-home testing is scoped to the actual building.
For a large lower level, identify rooms that feel damp, any sump equipment and whether the HVAC serves that floor separately. At a roof with dormers or several intersections, a single stained ceiling gives a more useful starting point than the age of the house. New construction can also experience leaks. Repair dates, builder correspondence and photographs help distinguish a recent incident from a recurring pattern.
01
A finished lower level adds occupied rooms beside below-grade walls. Humidity, drainage and plumbing should be considered together before attributing an odor to mold.
02
Roof valleys, dormers and wall intersections introduce flashing details. An interior stain near one is a reason to investigate, not proof that the flashing failed.
03
An air conditioner can cool a room while humidity remains high. Ask an HVAC professional to assess persistent humidity and system operation if the evaluation points there.
Where we test in McLean, and what to tell us
Langley Farms, Chain Bridge Forest, Chesterbrook Woods
Where a house retains an older crawlspace or duct system, arrange access and describe any additions. The present condition matters more than an assumed construction date.
Salona Village, Ballantrae Farms
For an extended or rebuilt property, identify changes to the footprint and exterior grading. A nearby older house is not evidence that both properties share a moisture problem.
Recent rebuilds throughout
In a large recent build, note each affected level and any separate HVAC zones. Finished basements and complex roof junctions may warrant different checks.
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.
Virginia's residential disclosure statement advises buyers to exercise due diligence, including considering a mold assessment conducted by a business following EPA guidance. Confirm the scope and timing with your agent before settlement. A laboratory sample documents a selected place and time; it does not certify an entire home as mold-free or replace advice about your transaction.
Va. Code section 55.1-703. Current as of September 2026. General information, not legal advice.
Yes. A new house can experience construction wetting, plumbing leaks or ventilation problems. That possibility does not mean testing is needed in every new McLean home. Describe the stain, odor or repair you are concerned about so the visit can investigate a specific question rather than assume a defect from the home's age.
The wording records a visual concern without confirming what the material is. A surface sample may help identify a particular patch, while moisture evaluation can investigate the surrounding conditions. Review the photograph and location in the property-condition report when choosing the testing scope; laboratory analysis and a visual assessment answer different questions.
We can discuss access around an occupied listing and its showing schedule. Visit length depends on the home and selected package, so confirm the timing when booking. Accessible areas are evaluated without planned utility shutoffs; tell us about furniture, locked rooms or other constraints that could limit the scope.
Mold Advanced includes a whole-home moisture and thermal evaluation with sampling chosen for the concern. The base price varies by property type and square footage, and additional sample charges may apply. Confirm accessible spaces and the sample plan before work starts, especially for a large McLean house with several finished levels.
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
