Greg founded mcCallumSather with Joanne McCallum in 1996. Sustainability was a key principal in Greg and Joanne’s vision for the firm and has been incorporated into all elements of the business. Over the years, Greg’s passion for sustainability and his drive to ensure the firm never lost focus … read more

Effective January 2, 2019 mcCallumSather has moved into our new work space located in Westinghouse HQ in Barton Village, Hamilton.

Our new address is:
Westinghouse HQ, 2nd Floor
286 Sanford Ave. N.
Hamilton, Ontario
L8L 6A1

A testament to Hamilton’s industrial excellence, Westinghouse … read more

Our 2016 renovation of the H.G. Thode Library at McMaster University, a lower level Master Plan, 2,000 SF renovation and incorporation of a maker space, is representative of the changing nature of library environments. The library dedicated to the University’s Engineering Department, was … read more

In 2016 we began unveiling the layers of the storied Westinghouse HQ, itself constructed in 1917 by the Canadian arm of Westinghouse Company, located at Sanford Avenue in Hamilton.

The office building was designed by architects Prack and Perrine, predecessors to Prack and Prack, who designed … read more

The Joyce Centre for Partnership & Innovation at Mohawk College recently certified as Canada’s largest institutional net zero building when it opened its doors to students this September.

Buildings account for nearly 40% of greenhouse gas emissions. It is vital that projects like The Joyce … read more