Ontario's Proven Basement Waterproofing & Foundation Repair Contractor

Proudly Serving Vaughan, Markham, Mississauga & Nearby

Clarke Basement Systems is the local specialist for waterproofing and foundation repair in the Toronto area. Although we're the waterproofing specialists, we do much more than just fix and prevent wet basements. We also fix basements that are damp and musty, repair foundation cracks and basement leaks, and repair crawl spaces and install dehumidifiers. Do you have a settling foundation or cracked, sinking concrete? We can help with that too.

We are a locally-owned and operated business that has been serving southern Ontario for over a decade. During that time our company has grown substantially because we provide warrantied solutions that are proven to last. We have become one of southern Ontario's most trusted basement waterproofing and foundation repair companies.

We provide free, no-obligation estimates for waterproofing and structural repair jobs in Vaughan, Markham, Mississauga and throughout Ontario. Call us at 1-416-221-9981 or click below to request your free quote today.

Free Estimates

We offer a free, in-home inspection and cost estimate for all our "Basementy" services.

Financing Available

From basement waterproofing to foundation repair, we can offer financing options for practically any job.

Why Southern Ontario Homeowners Choose Us

Dedication to Customer Satisfaction

Transferable Warranties on Waterproofing & Foundation Products

25+ Years of Experience in Waterproofing & Structural Repair

Exclusive, Patented Products

Homeowners facing flooded basements or sinking foundations need a contractor they can trust. They also need a company that knows what it's doing. It is our dedication to customer satisfaction and quality work that has made us Ontario's trusted experts for foundation repair and basement waterproofing.

We install tested, patented products in your home to permanently fix your leaking basement or sinking foundation. Our basement waterproofing system includes a lifetime transferable warranty, and our foundation and crawl space repair products come with 25-year transferable warranties. The servicemen who install these products are extensively trained in repair and waterproofing techniques. They are also trained on customer oriented service. This means our company gives complete written estimates, arrives on time, finishes on time, respects your home and answers all your questions.

Your Proven Solution for Waterproofing & Repairing Your Basement or Crawl Space

Our waterproofing solutions can solve any basement water problem caused by a failed sump pump, overflowing gutters, leaky windows or wall cracks or water seeping through the basement floor. But we do much more than keep water out of your basement. We provide solutions to control humidity, reduce dampness and prevent mold and musty odors in your basement or crawl space. Our products work together to improve the overall health and comfort of your home.

Hundreds of Satisfied Greater Toronto Customers

more testimonials

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By Shane R.
Pickering, ON
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By Ron M.
Burlington, ON
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By Colleen K.
Burlingotn, ON

More Reviews

After we waterproofed the basement or repaired the foundation of their home, our customers referred us to their friends. These continuous referrals have allowed our business to grow. With hundreds of satisfied homeowners to date we hope to service hundreds more in the future. If you need basement waterproofing, foundation repair, concrete repair or crawl space repair in southern Ontario give us a call today! 1-416-221-9981

Clarke Basement Systems is a trusted Basement Systems and Supportworks, Inc dealer in the Ontario area. We serve both residential and commercial customers in Mississauga, Markham, Vaughan and surrounding areas.


our service area

We serve the following areas

Our Locations:

Clarke Basement Systems
12045 McCowan Rd
Stouffville, ON L4A 4C3

Clarke Basement Systems
7250 Keele St Store #209
Vaughan, ON L4k 1Z8