PROJECTS Kitchener Public Library Southwest Community Branch PROJECTS 1620 Main St. E. PROJECTS 1120 Ossington News mcCallumSather’s firm-wide focus continues to centre on practice intelligence by advancing several staff members in January 2026 Accelerated Supportive Housing Through Innovation and Strategic Partnerships Nassagaweya Farm reworks historic agricultural structures into a cohesive contemporary residence As market shifts, developer plans new data centre - The Globe and Mail Drew Hauser and John Peterson to Present RAIC Live Webinar on Sustainable Design Modernizing Mid-Century Research Buildings - Lab Design News St. Matt’s celebrates opening of affordable apartments - Hamilton Spectator Integrated Design in Life Sciences: Liam Brown & Mary Georgious on NGBiPlus Podcast New Barton St. modular housing opens for at-risk Black, Indigenous seniors - CHCH News mcCallumSather unveils Waterloo Region’s first net-zero community building - Canadian Architect About mcCallumSather is a Canadian-owned, multi-disciplinary team offering architecture, mechanical engineering and interior design. Careers Explore career opportunities in architecture, mechanical engineering and interior design. Latest Projects Animal Care ATS Building Renovation Nassagaweya Farm Gakina Awesiinyag Earth Sciences & Chemistry, Level 3 Biindigen Well-Being Centre Southwest Community Branch 1120 Ossington 1620 Main St. E. 60 Bowden Henry's on James Case Study The Future of Lab Design Case Study A New Net-Zero Standard Case Study Data-Driven Design: A Proven Study