Basement waterproofing costs in Toronto depend on the repair method, foundation condition, and scope of work. Basement waterproofing in Toronto typically costs between $50 and $250 per linear foot, depending on whether interior or exterior waterproofing is required. Interior waterproofing usually ranges from $50–$100 per linear foot and is ideal for managing water intrusion from inside the basement. Exterior waterproofing is more extensive and costs between $120–$250 per linear foot. It involves excavation, foundation repair, and installation of exterior membranes and drainage systems. The final cost depends on factors such as: • Basement size and layout • Foundation type and condition • Crack severity or water entry points • Accessibility around the home A professional inspection is the best way to determine the exact cost and long-term solution.