Skip to content
Home/Mold Testing/Frederick, MD
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 Frederick 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.
Frederick's downtown historic district, Carroll Creek setting and residential streets around Baker Park provide several distinct local contexts. The city's historic-district guidelines document how work on older buildings is considered, but an individual home's present condition still depends on its construction and maintenance history. For mold testing, the important connection is between the area you are concerned about and the alterations, leaks or equipment changes that preceded it.
In a downtown rowhouse or converted building, identify the cellar and any shared services. Explain whether the concern is below street level, behind a recently finished wall or in an upper room. In a later detached house, a plumbing or window leak may define a much narrower question. Record the dates of repairs and whether the condition returned. Moisture evaluation adds context around accessible materials; a laboratory sample answers a selected air or surface question within that setting.
Local background: Frederick historic district guidelines and maps.
01
Explain when framing and drywall were installed and which utility edges remain accessible. Current readings cannot establish every surface hidden behind new finishes.
02
A stain may relate to plumbing or an earlier event that has already been repaired. Record fixture use and recurrence so observations can be interpreted alongside the sequence of work.
03
Additions and changed gutter routes deserve their own history. Photographs after rain may help relate an interior concern to a particular connection without assuming the entire house is affected.
Where we test in Frederick, and what to tell us
Market and Patrick Street area
For an older residence or a dwelling above a business, clarify basement access and shared plumbing. Bring photographs from renovation if original construction is now covered.
Carroll Creek and Baker Park residential edges
Describe the actual site's water history and interior concern. Nearby waterways and parks help locate the property but do not establish the condition of a particular room.
Later Frederick residential neighborhoods
Identify recently finished lower levels, additions and exterior-opening repairs. The scope should follow the affected spaces and known events rather than the overall age of the subdivision.
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.
For a Maryland property, define the question before ordering samples: a particular stain, persistent odor, water event or follow-up after repairs. Keep dated observations and laboratory findings with the repair history. A report does not determine health risks, insurance coverage or legal responsibility. Montgomery County also publishes separate radon requirements for covered home sales; confirm which rules apply to your transaction.
EPA sampling guidance; Montgomery County radon guidance. Current as of September 2026. General information, not legal advice.
Both use our Virginia and Maryland package schedule. This page serves Frederick, Maryland. Provide the full state and street address when booking so the office confirms the correct property and travel details.
Yes, with appropriate access and an agreed scope. Describe the residential area, shared services and any basement or roof concerns. Coordinate access controlled by the business or building manager before the appointment.
Not by itself. Explain actual water entry, a persistent odor or a particular surface concern. Geography is background; the current observations and repair history determine whether sampling would answer a useful question.
Bring the repair scope, dates and information about materials removed or retained. Describe where the odor is strongest and when it returns. A focused moisture evaluation and selected samples can address the remaining question while documenting inaccessible areas.
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
