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Superior Damage Restoration
- Happy
- Renovation
- Basement
“Sharon and his team went above and beyond helping me navigate the whole process of a water leak in my bathroom, beyond just the repairs and did a great job.”
Best Mold Inspection & Testing in Rockville, MD
24 companies listed · 5 in Rockville · 11 open 24/7 · 23 open weekends · all 24 rated 4.5+
Data verified October 18, 2026
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Clean and Shine Restoration
- Competitive
- Price
- Team
“I recently needed to have two large, old family rugs cleaned; I wanted to donate them somewhere but they needed cleaning first, and a neighbor recommended Clean and Shine.”
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ACM Services
- Abatement
- Company
- Asbestos
“Fortunately, when abatement is needed I can always count on the team at ACM Services, who has consistently provided me with premium quality work that has impressed dozens of my clients and saved the day for me and my team on far more than one occasio...”
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Radon Testing Montgomery County
- Company
“They set up google calendar meetings for setting up the test and picking up the test.”
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Nextday Inspect
- Office
- Test
- Team
“He caught that a new build in DC did not install a return grill for HVAC - something that we were able to make the builder agree to fix prior to moving in.”
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Protect the Investment
- Point
- Honesty
- Team
“He utilized the latest technology to detect current and prior water damage, he noted several major issues in addition to providing me a detailed get well plan.”
Listed for homeowners in and around Rockville, 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: Rockville, MD
5 of the 24 companies we list are based in Rockville; the other 19 serve Rockville from towns including Gaithersburg (5 mi), Washington, DC (14 mi) and Sterling, VA (14 mi). The companies on this page are rated from 4.6 to 5.0 across 10,874 reviews; 18 have 50 or more reviews. When customers rate these companies on specific qualities, they most often praise professionalism (89%), responsiveness (79%) and quality (76%). 11 are open around the clock; 23 are open on Saturdays and 17 on Sundays. The services the companies on this page list most often on their websites are air duct cleaning (4), mold remediation (4), water damage restoration (4), carpet cleaning (3) and air quality testing (2). 4 show a license on their websites; 5 list staff certifications (ASHI, IICRC and InterNACHI) and 6 have a BBB rating of A or A+. 17 have ten or more years of experience, the longest 48 years. 12 offer emergency call-outs; 10 give free estimates; 5 are family- or locally-owned and 3 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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Masterpro Disaster Recovery LLC
- February
- Mold Remediation
- 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
- Knowledge
- Questions
“Everytime we found him to be well organized, technically quite savvy in the workflow starting from making a reservation, and a perfectionist when it comes to doing home inspections.”
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House Inspection Associates
- Company
- Understand
- Report
“He provided a very detailed report later the same day, with pictures and categorized items by priority, including suggestions for things to ask the current homeowners about.”
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Ezgreen Air Duct and Dryer Vent Cleaning
- Afternoon
- Johnny Was
- Company
“Despite the complexities of our basement layout and the intricate nature of the repair job, Johnny demonstrated outstanding problem-solving, patience, and skill.”
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Triangle Legacy Flood Restoration & Carpet Cleaning
- Night
- Morning
- Job
“Ross and staff worked around it and made sure that my children and I weren't breathing in sewage 5 stars and I will definitely be using them for more upcoming repairs on my home”
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Core Team Inc.
- Scope of Work
- Remediation
- 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.”
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Essential Inspection Services
- Learned
- Patient
- 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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Restortech
- Pump
- Job
- Company
“The job was done professionally and I was extremely satisfied with how my entire claim was handled from beginning to when they delivered my furniture back .”
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Alhumd Inspections (Ahmed-Home Inspector)
- Drone
- Roof
- Understand
“He also communicated everything in a professional manner and gave me the report within 5 minutes of finishing up, as a first time home buyer he made the inspection process as smooth as can be.”
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Homekey Inspections
- Townhouse
- Checking
- Excel
“As we moved around the house, he talked us through everything that he was doing and what he was checking for, pointed out what he's going to write into his report and whether is was minor or commonplace or whatever it was.”
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Proclean Air Duct & Carpet Cleaning
- Stairs
- Work
- Mold
“Responsive, excellent service, Gerardo was most professional and polite and did a very thorough job.”
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A Veterans Environmental Technology Services Inc.
- Communication
- Company
- Inspection
“I've been trying to accelerate my home reno project and I asked Avets how quickly they could do the work and they were able to come out and begin the very next day.”
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Top to Bottom Services
- Termite
- Condo
- Patient
“I recently had the pleasure of working with Aaron Barcheski from Top To Bottom Services for a comprehensive home inspection, including additional add-ons such as well water analysis, well flow, septic scope, and pests inspections (performed by Ken Ko...”
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UCM Upholstery Cleaning
- Furniture
- Brand
- Technician
“He also handled the cleaning process meticulously, including cleanup after using the machine, and took care when moving equipment in and out of our house.”
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Smart Home Inspects
- Results
- Home Inspection
- Report
“He took the time to walk through our house and clearly explain his recommendations and observations which was invaluable to us as first time home buyers.”
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Indoor Green Solutions
- Communicative
- Company
- Mold
“Some of the finishing work could have been done better and ensuring everything got done required some oversight on my part -- but Oren ensured it got done to my satisfaction.”
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Protec Inspection Services
- Layperson
- Technician
- Condo
“It helped us to save money in our final negotiations with the seller and we will use it as a guide for any future repairs and budgeting regarding plumbing, HVAC, electrical etc.”
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DC Water Damage Restoration
- Executed
- Skill
- Team
“A sterling example of skill meeting kindness, their approach was nothing short of a masterclass in water damage restoration, blending efficiency with heartfelt concern.”
Why these companies made our list
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