Top-rated mold & toxic material testers.

Get matched with top mold & toxic material testers in Fairfax, VA

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Mold & toxic material testers in Fairfax

Avatar for MoldGone LLC
MoldGone LLC
4.9(
812
)

Serving Fairfax, VA and surrounding areas

Approved

In business since 2006

Free estimates

Warranties offered

"We called them due to concerns about potential mold in our son's bedroom. They came, tested, and the results were negative for problematic mold/air. In an industry rife with con artists, this was very refreshing. Highly recommend!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+8

Response time1 day
14 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for ZeroMold
ZeroMold
5.0(
34
)

Serving Fairfax, VA and surrounding areas

Approved

In business since 2010

Free estimates

Warranties offered

"Justin is very professional and informative. He tested every room in my home to put my mind at ease. It turns out we do not have a mold issue at this time, but I definitely know who I should call if one arises."
Fogging Process
Commercial Fogging
Fogging Process
Before and After Mold Spore Count
Inspection

+5

Response time6 hrs
Response rate95%
26 neighbors recently requested a quote
Avatar for The Best Air Quality and Restoration
The Best Air Quality and Restoration
4.8(
217
)

Serving Fairfax, VA and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"This is the second time I am using Val and his company. Thanks to Val we were able to identify a semi-hidden mold issue in our home from a long-term, slow leak. He was very professional and thorough. I was thankful for the easy-to-read report/test results we received. I would highly recommend Val for your mold testing needs."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+50

Response time1 day
2 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Mold Test Company VA
Mold Test Company VA
4.3(
101
)

Serving Fairfax, VA and surrounding areas

Approved

In business since 2008

Emergency services offered

Small jobs welcome

"The master teach was highly informative in explaining the science of the terms. I had previously hired another company and was left confused. I therefore paid more to have a second test by the Mold Test Company, and it was a very wise decision. If you think you may have mold in your home are apartment, I highly recommend that you contact Mold Test Company"
Technician
PVC Pipe
Shoes
Shoes
Shoes

+77

Response time1 day
137 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for Mold Test Company MD-DC
Mold Test Company MD-DC
4.4(
27
)

Serving Fairfax, VA and surrounding areas

Approved

In business since 2015

Emergency services offered

Small jobs welcome

"This is not a mold remediation company. When you hire this company, you are simply getting a mold test. Be specific when you explain your problem and what you are looking to get done. The mold technician was in and out in 20 minutes. He took an air sample and one swab, that s it. For the price of $299. Once you get the results of your mold test, they refer you to a company that is in the business of selling mold remediation products. Originally as much as $1600 for mold bombs, sprays and commercial graded air scrubber. I negotiated down to $1195. Then settled on only what I needed. Know what you want, do your homework before buying products you do not need."
Mold Testing
Mold Testing
Mold Testing
Mold Testing
Mold Testing

+70

Response time1 day
170 neighbors recently requested a quote
Recommended by77%of homeowners
Avatar for Water & Mold Remediators
Water & Mold Remediators
4.8(
10
)

Serving Fairfax, VA and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"We were in the process of purchasing a home and we needed a pro inspect the house and see if there was any evidence of mold damage. Carlos and his college came check to house and they were very professional, checked the moisture level around the house and the basement, and also visually inspected behind the walls through the ducts and gave us their professional feedback."
Storm Approaching
Water damage / Outside black water
Water damage / Outside black water
Water damage / Outside black water
Water damage / Outside black water

+50

Response time1 day
Recommended by100%of homeowners
...
Showing 1-10 of 466
FAQs for mold & toxic material test projects in Fairfax, VA

Some companies offer a no‑cost phone or video consultation that screens for red flags. If the discussion points to a real issue, the pro will recommend a paid on‑site inspection. The complimentary call clarifies whether you need full testing, but it isn’t a substitute for samples, lab work, or a written report. Always confirm what the free service covers before you schedule.

A standard inspection, which includes basic air and surface samples, takes an average of two hours. If the pro needs to probe hidden spaces, such as wall cavities or ductwork, plan on up to six hours. Extra time allows the inspector to reach tight areas, collect additional samples, and document findings. Lab analysis is a separate process and often adds several business days to the overall timeframe before you receive the full report.

Mold thrives where moisture lingers and air flow is poor. Common hotspots include bathroom walls, kitchen backsplashes, window sills, HVAC vents, fireplaces, crawl spaces, and enclosed attics. Check these areas regularly—especially after leaks or high‑humidity weather—to catch growth early and avoid costly repairs.

Unchecked mold can knock 20% to 37% off a home’s market value because buyers worry about hidden damage and health risks. Even after remediation, visible staining or a history of major moisture issues can still lower offers and prolong the time on the market. Addressing mold quickly protects both your property’s structural integrity and its resale appeal.

The Fairfax, VA homeowners’ guide to mold & toxic material tests

From average costs to expert advice, get all the answers you need to get your job done.