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Core Team Inc.
- Scope of Work
- Clean
- Basement
“We would strongly recommend their services and attention to detail, if you were unfortunately to experience a water leak / penetration situation as we did.”
Best Mold Inspection & Testing in Bethesda, MD
24 companies listed · 6 in Bethesda · 10 open 24/7 · 21 open weekends · 22 rated 4.5+
Data verified October 21, 2026
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Alfa Air Agency -Radon Mitigation
- Priced
- Basement
- Technician
“Thats how I made my appointment with certified radon testing company Alfa Air for get my home basement tested for 48 h , so I can see the full picture, all 49 air radon samples I received a full radon test report same day as machine was picked up f...”
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Capitol Mold
- Odors
- Basement
- Remediate
“I especially appreciated his honesty in telling us his services were not necessary and he even advised us on how to clean the trace amount of mold ourselves.”
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Radon Installation Contractors LLC
- Job
- Radon Mitigation
- Company
“His experience and skill shows in the quality of his work, he's professional and friendly, his rates seem fair and competitive for the area, and he got my radon levels down from 8-12 to less than 0.”
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Alban Inspections Inc.
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Treadstone Inspections
Listed for homeowners in and around Bethesda, MD, these 24 companies test for mold and indoor air problems. Listings show what each one states about sampling, lab work and the environmental tests it offers, plus ratings and quotes from public reviews.
Area overview: Bethesda, MD
6 of the 24 companies we list are based in Bethesda; the other 18 serve Bethesda from towns including Washington, DC (8 mi), Gaithersburg (11 mi) and Alexandria, VA (12 mi). 22 of the companies on this page have a rating, from 4.6 to 5.0 across 4,367 reviews; 17 have 50 or more reviews. When customers rate these companies on specific qualities, they most often praise professionalism (93%), responsiveness (84%) and quality (83%). 10 are open around the clock; 21 are open on Saturdays and 17 on Sundays. The services the companies on this page list most often on their websites are mold remediation (4), home inspection (3), water damage restoration (3), air duct cleaning (2) and carpet cleaning (2). 8 show a license on their websites; 5 list staff certifications (IICRC and ASHI) and 3 have a BBB rating of A or A+. 15 have ten or more years of experience, the longest 34 years. 10 offer emergency call-outs; 7 give free estimates; 6 are family- or locally-owned and 4 list coupons or special offers. We count these figures across the companies on this page; distances are straight-line, and hours and prices change, so confirm the details with the company before you book.
What should I look for on an inspection company's website?
Sites are listed for all 24 companies here. Check whether the company sells removal as well as testing, which lab it sends samples to, and whether it shows a redacted sample report. A firm that explains its sampling method in public is easier to hold to it later.
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Top To Bottom Renovation
- Communication
- Renovations
- Team
“My insurance company told me to do everything to prevent further damage but they could not authorize a contractor payment until I was assigned an adjuster.”
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Protect the Investment
- Point
- Home Inspection
- Team
“We called Tory late Sunday afternoon, and asked if someone from his team could come out the next morning from 8-9:45am as that was the only available slot to get into the home.”
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Masterpro Disaster Recovery LLC
- February
- Basement
- Team
“The company is professional, courteous, extremely responsive and is careful of the personal property that is located in the area where they are servicing.”
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Atlas Home Inspection
- Electrical
- Condo
- Questions
“The inspection was scheduled for around 3 hours, but it ended up taking 5 because underneath the pretty new paint and flooring, there were many concerning issues.”
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Ezgreen Air Duct and Dryer Vent Cleaning
- Afternoon
- Technician
- Company
“He inspected everything thoroughly, and we ended up getting all of our AC ducts cleaned, installing ultraviolet lights b/c of heavy AC use, and having mold remediated.”
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House Inspection Associates
- Company
- Informative
- Report
“But the real good part is that he will find EVERYTHING wrong with the house and send you a 60-80 page pdf report with pictures, before the sun sets that same day!!”
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Triangle Legacy Flood Restoration & Carpet Cleaning
- Night
- Work
- Job
“I've recommend Triangle Legacy family members and friends and everyone have had the same report about their experience with The Guys at Triangle Legacy.”
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1st American Home Inspections
- Market
- Roof
- Company
“He took the time to point out and explain all findings, provide photos and an interactive tool which provides estimate costs for all report findings discovered during the inspection process.”
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911 Restoration
- Sewage
- Basement
- Job
“They arrived quickly despite it being the middle of the night, promptly assessed the situation, and then patiently walked us through the planned next steps.”
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Essential Inspection Services
- Learned
- Buyers
- Home Inspection
“It is the first time I have seen an inspection but Inspector Felipe gives me a lot of confidence and it is clear that he has a lot of experience, I recommend him”
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Pro Spex Home & Commercial Inspections Inc.
- Regret
- Drywall
- Patient
“Pro Spex was recommended to me by a colleague who praised their customer service and thoroughness, so I decided to engage them do our pre-drywall inspection of our new build.”
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Alhumd Inspections (Ahmed-Home Inspector)
- Drone
- Patient
- Understand
“His knowledge and professionalism were evident, and his respectful demeanor was appreciated, especially his consideration for cleanliness by wearing shoe covers indoors.”
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Bay View Restoration
- Tools
- Company
- Team
“They were quick to respond, kind and courteous (much appreciated during a stressful situation), and coordinated smoothly with the other contractors and our insurance company.”
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Homekey Inspections
- Townhouse
- Work
- Excel
“I really appreciate that out of the long list of things he inspected and found issues with, he made a short list of the MOST IMPORTANT issues to attend to FAST to focus my priorities and plan for in terms of timing and finances.”
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Proclean Air Duct & Carpet Cleaning
- Stairs
- Stains
- Mold
“What a beautiful job.”
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A Veterans Environmental Technology Services Inc.
- Communication
- Property
- Inspection
“The CEO had a level of integrity that I have only seen in my own parents who are also veterans, so I immediately knew I wanted to work with this company.”
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Next Level Home Inspections
- Familiar
- Pictures
- Report
“Ken was able to come out the same afternoon and was very informative and thorough, and he provided an unbiased opinion for recommended next steps based on his observations.”
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VA Home Inspect
- Veteran
- Price
- Job
“Our inspector gave a thorough inspection with great pictures on our report that included arrows and a detailed description that let us know exactly what we were looking at.”
Why these companies made our list
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