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Home/Mold Testing/Alexandria, 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 City of Alexandria
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.
Alexandria's historic districts include Old Town, Rosemont and the Town of Potomac around Del Ray. The city's preservation records describe Rosemont houses built mainly between 1908 and 1930; an individual property's renovation history still matters.
For an Old Town cellar, bring details of past water entry and any interior waterproofing. In Del Ray or Rosemont, tell us about crawlspaces, additions and rooms finished after the original construction. In a newer apartment or townhouse, a particular window, balcony or bathroom may be the better starting point. The visit follows the evidence at your address rather than treating every building near the Potomac as a groundwater problem.
01
Water can enter below-grade rooms through several routes. Record rainfall, pump operation and plumbing incidents so groundwater is considered alongside other possible sources.
02
Interior insulation and finishes change how a masonry wall dries. Tell us what was added and when, particularly if an odor began after renovation.
03
A stain near a new window or roof junction warrants a closer look at the surrounding materials. Ventilation and indoor humidity also belong in that assessment.
Where we test in Alexandria, and what to tell us
Old Town Alexandria
In a cellar or lower-level room, note where staining appears and whether it follows rain. Brick condition and interior finishes are useful clues, not a diagnosis.
Del Ray, Rosemont
For a bungalow or an extended house, identify crawlspace access and changes made during renovation. A concealed connection may need further investigation beyond non-invasive testing.
Cameron Station, Potomac Yard, Potomac Greens, The West End
In a newer home or shared building, bring details of window leaks, balcony repairs or plumbing incidents. A targeted concern can be evaluated without assuming widespread damage.
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.
Air sampling uses a pump, and a surface sample can be collected from an accessible area. A standard visit does not involve opening walls or drilling into historic fabric. Describe delicate finishes when booking, and we will explain access limits and any concern that needs a separate investigation.
A persistent musty odor is a reason to investigate moisture even without a visible patch. Tell us whether the Alexandria basement smells after rain, during cooling season or continuously. Sampling may help answer a defined question, but a single air sample cannot locate every concealed source or certify a room as safe.
Distance to the Potomac alone cannot predict conditions inside your house. Site elevation, drainage, maintenance and the history of water entry all matter. Bring photographs of seepage or flooding if you have them. The technician will assess the accessible property rather than infer a problem from the street address.
Ask your real-estate agent or attorney how known conditions and a new report affect your specific disclosure obligations. Testing provides dated observations and laboratory findings within its scope. It does not decide what a seller must disclose or guarantee how the information will affect a transaction.
Real availability on the next screen. No call back required.
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NextDay Inspect
46179 Westlake Dr, Ste 200, Sterling, VA 20165
(703) 450-6398
