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Home/Mold Testing/Vienna, 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.
Vienna service calls can involve a ranch, a split-level house, an addition or newer infill. When booking, identify crawlspaces and finished basement rooms as well as the area where you first noticed the concern.
A low roofline, an enclosed crawlspace and a later basement finish create different assessment questions. If leaves collect in the gutters, photographs during rain can show where overflow lands. If an odor began after new flooring, the installation date and any moisture testing are useful. We use the history of your property to choose an appropriate scope, rather than assuming that tree cover or a particular house style means mold is present.
01
An inaccessible crawlspace can conceal conditions beneath a room. Tell us about limited clearance before the appointment so the scope and access limits are clear.
02
Overflowing gutters can concentrate roof runoff beside a foundation. Track when the basement odor occurs and whether it coincides with heavy rain.
03
Floor coverings can hide dampness at a slab. A recent carpet or flooring change is worth mentioning, particularly if the odor appeared soon afterward.
Where we test in Vienna, and what to tell us
Dunn Loring Woods, Wolftrap Meadows
For a ranch or split-level property, describe the connection between the lower floor and any crawlspace. Safe access determines which parts can be evaluated directly.
Beulah Road Meadows, Westwood Country Club
If the house has been extended or the basement finished, bring renovation dates and past leak records. Changes around the foundation may be relevant to a current concern.
Tysons Green and the newer infill
For a newer home, identify recurring condensation or a specific stain. Effective air sealing still needs suitable ventilation and moisture management.
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.
An accessible crawlspace can be included when it is relevant to the agreed scope. Tell us about clearance, entry location and stored items before booking your Vienna appointment. Unsafe or inaccessible areas cannot be evaluated directly, and the report should identify that limitation rather than imply the entire concealed space was inspected.
If there is staining, an odor or a history of wetting, investigate before new finishes conceal the materials. A dry-looking surface alone may not answer whether the underlying issue was resolved. Discuss moisture evaluation and any useful sampling with the technician, and retain drying records from the renovation contractor.
Persistent exterior dampness is worth maintaining and investigating, but shade alone does not establish indoor mold. Keep gutters clear and note whether interior staining follows rain. If roofing or siding remains wet or damaged, a suitable contractor can assess it; the mold visit focuses on the concern within its agreed scope.
Discuss the HVAC concern when booking so the technician can explain which accessible equipment and sampling locations fit the visit. An air result cannot by itself prove that ductwork is the source. HVAC repair or cleaning is a separate decision for a qualified contractor after the evidence has been reviewed.
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
