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About Us

Foundation Repair, Basement Waterproofing, Crawl Space Repair & and Concrete Experts

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Clarke Basement Authority, a Groundworks company, specializes in helping homeowners with their residential and commercial foundation repair, basement waterproofing and crawl space repair needs. Our top priority is providing high-quality home repair solutions and personalized service across the Toronto area. With fully trained technicians, industry-leading products, and nationally backed warranties, Clarke Basement Authority is here to restore your foundation. 

History

In 2003, Don Clarke founded Clarke Basement Authority and brought foundation repair solutions to the Toronto area. In 2024, Clarke Basement Authority partnered with Groundworks, the nation’s leading and fastest growing foundation repair and water management solutions provider, to offer industry-leading technology and resources to more customers across Ontario. Clarke Basement Authority continues to provide elite customer service and quality home solutions for all foundation repair, basement waterproofing, and crawlspace repair needs.


Awards


Services We Provide

Service area map for GW Toronto

Service Areas

Clarke Basement Authority

12029 McCowan Rd
Stouffville, ON L4A 4C3