Donald Construction

Closed
333 Humberline Dr
Toronto, ON M9W 5X3

Donald Contracting, founded in 1950 by Giovanni John Manarin, has grown from a small operation to the largest concrete and drain company in Ontario, built on a foundation of integrity, quality, and professionalism. The company has serviced over 500 job sites across a wide geographical area, showcasing its adaptability and commitment to excellence in low-rise residential construction and drainage systems.

Still family-owned and managed under current president Sergio Manarin, Donald Contracting emphasizes strong customer focus, ethical business practices, and continuous improvement. With a dedicated after-sales service team and a commitment to employee development, the company fosters a supportive work environment that values loyalty and community engagement.

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