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Home/Mold Testing/Fairfax Station, 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.
Fairfax County's record for the St. Mary's Church Historic Overlay District, in Fairfax Station, traces the name to a railroad stop where Clara Barton came in 1862 to care for the wounded of Second Manassas. The same record notes construction on the church began in 1858, decades after the land was donated, once Irish immigrants working on the railroad settled here. Little of that railroad landscape remains, but the large, wooded lots replacing it around Fairfax Station leave room for a well, a septic system or a detached structure.
On a large lot in Barrington or South Run, tell us whether the property relies on a well and septic system, and describe the equipment's location relative to the affected room. In Hampton Chase or Fairfax Station East, a custom-built house may include a detached garage or guest structure; identify which building is affected. Near Burke Lake or a wooded stream valley, ground can stay damp longer after rain; mention how a crawlspace or lower level has performed during wet periods.
Local background: Fairfax County Planning and Development: St. Mary's Church Historic Overlay District.
01
A well pump room or wellhead area on a large lot can hold moisture differently than a home connected to public water. Describe the room's ventilation, its distance from the house, and any recent service before the visit.
02
A detached guest house, garage or barn has its own roof and foundation separate from the main house. Describe which structure is affected, whether it is heated year-round, and how it connects to the main house's utilities.
03
A lot near a stream valley or lake can stay damp longer after rain than one on higher ground. Describe how a crawlspace or lower level has performed during wet periods and whether standing water has ever reached the foundation.
Where we test in Fairfax Station, and what to tell us
Barrington, South Run
On a large lot, describe whether the property relies on a well and septic system, and note the equipment's location relative to the affected room. A nearby lake or stream valley does not by itself indicate a moisture concern.
Hampton Chase, Fairfax Station East
For a custom-built house, identify which wing, addition or detached structure is affected, and describe the sequence in which they were built. A guest house or garage is scoped separately from the main residence unless you describe otherwise.
Canterberry Estates
On an equestrian-friendly property with outbuildings, describe which structure is affected, whether it is heated, and how it connects to utilities from the main house. Barn or stable buildings are evaluated only if you ask us to include them.
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.
A guest house is usually its own targeted area, so Mold Basic covers sampling there and Mold Plus adds the moisture and thermal evaluation of that same building. Mention whether it is heated year-round and how its plumbing and power connect to the main house. If the main house has a concern of its own, say so when booking so both buildings can be scoped together.
Not extra preparation, but tell us your water source and where the septic system sits relative to the area of concern before the visit. A well pump room or nearby equipment closet is sometimes worth describing too, since it can hold moisture differently than the rest of the house.
Proximity to the lake does not by itself indicate a moisture concern. Describe how a crawlspace or lower level has performed during wet periods, and note any standing water you have observed near the foundation. The technician will assess the accessible property rather than assume a condition from its location.
Yes, in most cases. A standard visit does not involve opening walls or removing finishes. Describe any sensitive materials or architectural details near the affected area when you call, and we can explain access limits and whether a separate investigation would be needed for anything more invasive.
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
