Best Mold Inspection & Testing near Caledon, ON
None of these companies is based in Caledon; they work from towns including Brampton (22 km), Mississauga (34 km) and Woodbridge (23 km).
24 companies listed · 9 open 24/7 · 22 open weekends · 20 rated 4.5+ · 3 show a licence
Data verified October 18, 2026
ONT Restoration
TRU Inspections
Saihomeinspection
Mold Solutions Canada
Inch By Inch Inspections
Listed for homeowners in and around Caledon, ON, these 24 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: Caledon, ON
22 of the 24 companies on this page have a rating, from 4.0 to 5.0 across 1,291 reviews; 6 have 50 or more reviews and 20 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (92%), quality (83%) and responsiveness (82%). The topics that come up most in reviews of the companies on this page are "knowledge", "price" and "communication". 9 are open around the clock; 22 are open on Saturdays and 19 on Sundays. The services the companies on this page list most often on their websites are mold removal (4), water damage restoration (3), asbestos abatement (2), attic mold removal (2) and odour removal (2). 3 show a licence on their websites and 1 lists staff certifications (IICRC). Domain records put 11 websites of the companies on this page at ten or more years old; the oldest dates from 2000. 10 offer emergency call-outs; 1 offers remote or virtual consultations; 9 give free estimates and 3 are family- or locally-owned. 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 24 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.



