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  • Clarke Basement Systems (Div of Don Clarke Contracting Ltd) Website
    (905) 642-4861
    10638, 9th Line, Markham, ON L6B 1A8

    Groundworks delivers comprehensive foundation repair, basement waterproofing, crawl-space encapsulation, concrete lifting, and radon mitigation services to residential customers throughout Southern Alberta and Southern Ontario, helping protect homes from structural damage, moisture intrusion, and i…