Serving Greater Toronto Area for over 20 Years

Protect your home with our expert services in foundation repair, basement waterproofing and crawl space repair serving the Greater Toronto area. We're here to keep your home strong and healthy for you and your family.

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Clarke Basement Authority has merged with Groundworks, the leading and fastest-growing foundation and concrete-lifting solutions company.

To learn more about our new partnership, click here.

Award-Winning Foundation Experts

Clarke Basement Authority specializes in foundation repair, crawl space repair, and basement waterproofing throughout the Greater Toronto Area. Whether you’re dealing with water seepage, cracks in your foundation, or mold growth, we have the solutions to keep your basement safe and dry. Trust Clarke Basement Authority’s 20+ years of experience to provide reliable, long-lasting solutions for all your foundation and basement waterproofing needs.

Basement Waterproofing

Discover our basement waterproofing services, including sump pumps, interior drainage, and vapor barriers.

Crawl Space Repair

Clarke Basement Authority’s crawl space repair solutions for GTA homeowners include piers and crawl space jacks.

Foundation Repair

Learn about our foundation repair solutions, including wall anchors and push piers, for homeowners in the GTA.

I called and a service tech was at my house with 48 hours. Ali was fantastic. He did a thorough inspection, explained his findings to me, and completed them promptly.
Samjohnrichardson, HomeStars

Proudly Serving the Greater Toronto Area

Toronto · Markham · Vaughan

Why Homeowners Choose Clarke Basement Authority

Since 2003, Clarke Basement Authority has been dedicated to ensuring homeowners’ peace of mind by providing stable, dry homes across the Greater Toronto Area. With a commitment to high-quality work and personalized service, we’ve earned our reputation as a premier provider in the industry.

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