Home/Mold Testing/Loudoun County/Ashburn, VA
Mold testing
Mold Testing in Ashburn, VA
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 Loudoun County
What our customers say
From our Google reviews.
Sonya was very knowledgeable and explained the air mold testing well. Would definitely use this company again
I hired Next Day Inspect to do a mold inspection on two houses. Scheduling was easy. The inspector could not have been more professional.
How much does mold testing cost in Ashburn?
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
Mold Walk & Talk
"Something feels off and I do not know if testing is worth it."
$175
30 minutes on site
- Time with an environmental technician
- Moisture meter and thermal camera
- Findings explained on the spot
- Each additional 30 minutes $95
- No samples or laboratory work
One area, tested
Mold Basic
"I can see it, or I know exactly where to look."
$345
One targeted area, 1 to 2 hours
- Indoor sample plus outdoor comparison
- Accredited laboratory analysis
- Written laboratory report
- Additional samples $95 each
One area, plus the source
Mold Plus
"There was a leak and I want to know where the water went."
$495
One targeted area, 1 to 2 hours
- Everything in Mold Basic
- Moisture and thermal evaluation of the area
- Read Your Mold Report guide
- Each additional area $50 plus its $95 sample
The whole home
Mold Advanced
"It could be anywhere, or it keeps coming back."
From $550
Priced by home size, 1 to 2 hours
- Whole home moisture and thermal evaluation
- Sampling in the areas that call for it
- Read Your Mold Report guide
- Post-remediation re-test $295 held 3 months
* Prices shown are for Virginia and Maryland. In Washington DC, Mold Basic is $425, Mold Plus is $575, and Mold Advanced starts at $630. Mold Walk & Talk is $175 everywhere.
Where moisture can hide in Ashburn homes
For an Ashburn mold testing visit, identify the room with an odor, stain or visible growth and whether the home is newly built, recently renovated or occupied for several years. A window leak, shower ceiling stain and damp basement each need a different starting point.
Share dates of construction wetting, repairs, drying and any builder-warranty deadline. Bring photographs if a concern was covered or cleaned before the visit. The technician can assess accessible moisture conditions and explain whether targeted samples would add useful evidence for the question you need answered.

01
Moisture behind modern finishes
Air sealing and insulation affect drying but do not by themselves establish mold. An evaluation considers how moisture arrived and whether the affected materials remain damp.
02
Bathroom and laundry ventilation
Warm bathroom exhaust should follow an appropriate route outdoors. A disconnected duct can wet attic materials even in a recently completed home.
03
Builder warranty repairs
Before a repair is closed, ask how drying was verified. Photos and readings taken during the work may be more informative than a sample taken after everything is concealed.
Where we test in Ashburn, and what to tell us
Ashburn Village, Ashburn Farm
For a home undergoing its first major replacements, identify which windows, siding sections or appliances were changed. A dated repair history helps separate old staining from current wetting.
Broadlands, Lansdowne on the Potomac
For a finished basement or lower-level bedroom, explain when the room feels damp and how it is conditioned. Check the actual house rather than assuming newer construction stays dry.
Brambleton, One Loudoun
For a new or attached home, bring builder records and identify the affected room precisely. A targeted concern may involve one detail without implying a development-wide problem.
We only perform testing, not remediation.
We do not remove mold, so we have nothing to gain from your results. If your report shows a problem, you choose who fixes it. Once the work is done, we can test again and tell you what we find.
Before you book mold testing in Virginia
Tell us which room or unit is affected, what you can see or smell, and the history of any water entry, drying or repairs. Ask which package includes the evaluation or laboratory samples needed for your question. If you need a report for a sale or repair deadline, confirm appointment options and expected laboratory turnaround with the office before relying on that date.
Mold testing near Ashburn
Mold testing in Ashburn, answered straight
My house is under builder warranty. Should I test before it expires?
If there is an unresolved moisture concern, an assessment before the deadline may provide useful documentation. Confirm notice procedures and timing with the builder or your adviser. A report does not extend a warranty or guarantee a remedy. Provide construction, repair and drying records when arranging an Ashburn visit.
Is mold really a problem in new construction?
It can occur when materials remain damp during or after construction, or when a later leak is not properly addressed. That does not make every new house a testing candidate. Focus on the actual concern, such as a stain, persistent odor or documented wetting, and ask what further evaluation would clarify it.
We are the first owners and nothing has ever leaked. Is testing pointless?
With no moisture history or specific concern, routine sampling may provide little useful direction. A Walk & Talk can help discuss what you are noticing and whether further evaluation is warranted. It includes no laboratory sampling. Health symptoms should be discussed with a healthcare professional rather than diagnosed from a home air sample.
Can you test a house we are buying before the new build closes?
A pre-settlement visit can be discussed if the builder provides access and scheduling permits. Identify specific concerns and any construction wetting you know about. Confirm the scope with your agent or builder, because a mold appointment does not replace a broader new-construction evaluation or determine your contractual options.
Book a mold test in Ashburn
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