About Clarke Basement Systems

Professional Basement Waterproofing Company

Clarke Basement Systems is your local Basement Systems® dealer in the Ontario area. We serve Mississauga, Markham, Toronto and many outlying areas, including Richmond Hill, Oshawa, Brampton, Vaughan, Barrie, Newmarket, Peterborough and nearby. See our full service area.

Accreditations and Affiliations

As basement waterproofers, foundation repair, concrete leveling, and crawl space repair experts, we are locally owned and operated contractors who have been in business since 2003.

A certified Basement Systems® dealer, we have exclusive access to a wide variety of waterproofing products that have been used in over 200,000 basements since 1987.

Each of our products includes a written, transferable warranty and the backing of an international network that's dedicated to keeping basements and crawl spaces dry all the time!

About the Owner

Don Clarke

For over 20 years Don has been a leader in the construction industry. He is responsible for the strategic vision and leadership for both Clarke Basement Systems and Supportworks of Ontario.

Serving the greater Toronto area, Clarke Basement Systems specializes in crawl space repair, foundation repair, concrete lifting, and basement waterproofing in Ontario. Locally owned and operated, they are part of a national network of waterproofing experts offering high quality and up-to-date products.

Customer Review

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"Did our homework and landed with a knowledgeable company..."

By Caroline from Owen Sound, ON

"Amazing, very considerate, polite, efficient and took the..."

By Brenda B. from Mississauga, ON

By David M. from Toronto, ON

"I can't be more thankful and happy with my service. I'm..."

By Rebecca W. from Toronto, ON

"Michael was very knowledgeable and friendly. He quickly..."

By Marie-France B. from Toronto, ON

By Robert P. from Bowmanville, ON

Free Waterproofing and Repair Quotes

At Clarke Basement Systems, we offer free, no-obligation waterproofing quotes to homeowners within our service area.

During your Free Estimate, our waterproofing specialist can answer any questions you may have about your wet basement or crawl space.

Our free quotes include all of the following:

Our 88-Page Waterproofing Book: Before we meet with you, we'll send along a copy of one of our 88-page crawl space and basement waterproofing books.

This book features our full selection of products, while explaining why basements leak -- and what we can do to permanently solve your problem.

A Personal, On-Site Inspection: Your waterproofing or foundation specialist will inspect your basement or crawl space to identify sources of flooding and moisture and explain the problem in depth.

Your Complete Waterproofing System Design: Our waterproofing specialist will measure your basement's dimensions and identify the best spot to place the sump pump and run your discharge line. You select which of our products you'd like in your home, and we make a plan together.

Our FREE Written Quote: We provide our customers with a free, no-obligation written quote at the end of each visit. Our prices are firm -- there will be no hidden expenses later on, and there will be no high-pressure sales techniques.

We Solve All Your Basement, Crawl Space, and Foundation Problems 

We'd like to show you how we can help you waterproof your basement, control moisture in your crawl space, or fix a failing foundation. We have the experience, equipment, and best practices you need to ensure a dry basement and structural integrity.  

For a free waterproofing, or foundation repair quote, call or-email us today!