Icon Home Inspections Inc.
“Helped me make an informed decision and answered my calls when I had questions”
Best Mold Inspection & Testing in London, ON
10 companies listed · 6 in London · 5 open 24/7 · all 10 open weekends · 8 rated 4.5+
Data verified October 18, 2026
A.L. Inspections
“Aaron did an amazing job home inspecting, we went through the home and he explained everything perfectly so that I can make some arrangements once I purchase my home.”
1st Call Home Inspections Inc
“Needless to say, we appreciate David's expertise, thoroughness, and professionalism - it brought peace of mind during the home purchase process”
Homesure Inspections
“HomeSure Inspections got us booked in quickly, were personable throughout, and did an incredibly thorough job.”
London Extreme Clean
“Dean was incredibly fast to respond to my request for cleaning services to eliminate skunk odour from our home.”
Emergency Flood Response
“We called Emergency flood response and they were able to take care of everything!”
Listed for homeowners in and around London, ON, these 10 companies test for mould 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: London, ON
6 of the 10 companies we list are based in London; the other 4 serve London from Thames Centre (16 km), Ilderton (19 km) and Stratford (48 km). The companies on this page are rated from 3.9 to 5.0 across 829 reviews; 5 have 50 or more reviews and 8 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (100%), quality (88%) and responsiveness (85%). 5 are open around the clock; all 10 are open on Saturdays and 9 on Sundays. The services the companies on this page list most often on their websites are air quality testing (2), asbestos testing (2) and home inspections (2). 1 shows a licence on its website and 1 lists staff certifications (IICRC). Domain records put 4 websites of the companies on this page at ten or more years old; the oldest dates from 1999. 5 offer emergency call-outs and 3 give free estimates. We have a website on file for 9 of the companies on this page; 9 publish a contact page and 7 list a public email. 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.
Is one opinion enough on a damp problem?
Not when the first visit ends with a large removal quote attached. You have 10 companies on this page, so getting a second diagnosis is straightforward. Ask each one what it thinks the water source is. Two independent answers that match is the strongest signal you will get.
Servicemaster Restore
“I just want to give a thank you to Raymond and his wonderful team for all of their hard work and dedication to helping our family be able to come home.”
Steam Canada Head Office
“The tech was very professional, showed great pride in his work and assisted in moving a few small furniture items to get the carpet cleaned.”
Prelude Home Inspections & Consulting
“Because of his attention to detail, you will end up with a far better understanding of how simple upgrades or maintenance, could prevent future problems with your potential purchase.”
Winmar Property Restoration Specialists
“To Richard and all of your team that worked so diligently on our home Thank You from the bottom of our hearts.”
Why these companies made our list
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