5Multi-Platform Reputation
12.5/15
Rated on 2 platforms — Google 4.9, Yelp 5.0; ratings agree
Based in Brampton, ON, GMS Basement Waterproofing Inc has earned 4.9★ across 34 reviews. In its reviews, professionalism, workmanship, communication come up again and again. Our N49 Trust Score puts it at 60.2/100 — enough to make Canada’s Top 100 Waterproofing Companies. It ranks #1 in Google Maps local results for Brampton.
4.9★ from 34 Google reviews
Rated on 2 platforms — Google 4.9, Yelp 5.0; ratings agree
Has a working website
Ranks #1 in Google Maps local results for Brampton
~11.3 years on Google Maps (from total-reviews ÷ monthly rate)
Not on Three Best Rated / BBB
~35 reviews across 2 platforms
Mentions 23 service areas on home page (e.g. ajax, aurora, brampton, burlington, east york)
On 1 extra platforms; reachable by website, phone
3 platforms linked: Facebook, LinkedIn, X
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By Anthony Ratneiya on Apr 17, 2026 Verified by Google
George came over and gave us a rundown of what was needed, and a fair estimate. After work was completed he cleaned up and even hauled away some extra garbage for us. Highly recommended & very professional 👌🏽
By Chicmi Events on Mar 23, 2026 Verified by Google
This is Nathalie, and i would like to say this is the best company for basement waterproofing. I was very happy with the work George did in fixing the leaking in my basement. Very professional and a neat job. Thank you George!
By Shawn Quait on Oct 3, 2024 Verified by Google
Very impressed with the basement waterpoofing repair. Having worked with other basement waterproofing services these guys were the most professional. Got the job done quick to minimize disruption. Did a great job discussing options of inside vs outside waterproofing. Also identified issue with existing sump pump and bucket and replaced these as well. Great job, great quaility work, and great value!
By Goran Č. on Apr 23, 2022 Verified by Google
Very happy with work that George and his crew did. Very hard workers and very dedicated in their job. I will recomend GMS to everyone I know that needs quality waterproofing work done.
By Vin Shakyaver on Aug 22, 2019 Verified by Google
GMS Basement Waterproofing.
George and GMS are the real deal. Yes, price is excellent and comparable but don't just go by dollar and cents. George and team are ethical, hardworking, dedicated, credible, honest, going above and beyond to deliver the completion of work on time for the customer.
He communicates well, provides daily updates to set clear/concise expectation on the schedule of work. We were fortunate enough to find him through a reference, and we would gladly refer him to everyone. You won't be disappointed with his work knowledge.
Thank you, George & GMS!
Vin & Cris
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GMS Basement Waterproofing Inc 4.9 out of 5.0 based on 34 user reviews.