Sabatino Valentini founded our company in 1922, laying the groundwork for a legacy of excellence in civil infrastructure.

Played a key role in constructing Highway 401, one of the busiest highways in North America.

Valentini’s expertise helped shape the Ontario Science Centre, a landmark project showcasing engineering innovation.

After Sabatino Valentini’s passing, his sons took over the company, continuing his vision and expanding operations.

By this time, our company had grown to over 1,500 employees, becoming a major player in the industry.

Buffy Valentini bought out his brothers’ shares, taking ownership and steering the company into a new era.

The company was rebranded as Valentine Underground, continuing its tradition of excellence in civil infrastructure.