Best Mold Inspection & Testing in Montreal, QC
17 companies listed · all 17 in Montreal · 2 open 24/7 · 12 open weekends · 16 rated 4.5+
Data verified October 18, 2026
MTL Home Inspection: Inspection Maison Montreal
YG Home Inspection Services
Multisinistres
Robert Young's Montreal Home Inspection Services Inc.
Flood Cleaning Montreal
Listed for homeowners in and around Montreal, QC, these 17 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: Montreal, QC
All 17 companies we list here are in Montreal itself. We have 18 companies in Montreal on file; this page shows the highest-rated 17. 16 of the companies on this page have a rating, from 4.7 to 5.0 across 591 reviews; 4 have 50 or more reviews. When customers rate these companies on specific qualities, they most often praise professionalism (93%), quality (75%) and responsiveness (70%). The topics that come up most in reviews of the companies on this page are "communication" and "price". 2 are open around the clock; 12 are open on Saturdays and 10 on Sundays. 5 show a licence on their websites. Domain records put 5 websites of the companies on this page at ten or more years old; the oldest dates from 1999. 4 offer emergency call-outs; 4 give free estimates and 1 lists coupons or special offers. We have a website on file for all 17 of the companies on this page; 16 publish a contact page; 13 list a public email and 1 takes bookings online. We count these figures across the companies on this page; 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 17 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.



