Making Sustainable Architecture

WELCOME to MSA, a leading interdisciplinary design firm based in Hamilton, Ontario. Our focus on Sustainability drives the work we do – so that our integrated approach not only inspires efficiency in architecture, interior and engineering design, but sparks innovation.
Under the overarching umbrella of sustainability, our focus lies within the spheres of Healthcare/ Research, Institutional, Commercial, Multi-Unit  Residential and Industrial/ Transit projects. We fluidly navigate between renovation and new construction projects that spans a broad range of scales from the relatively small to the very large. 

Recent News


New Faces

mcCallumSather is excited to announce two new additions to our team, Mary Georgious, Mechanical Engineering Lead and Julie Ritchie, ARIDO Interior Designer.

A new brand identity

mcCallumSather launches a new identity today, designed to broaden the perception of our brand with new and existing clients, our partners and fellow consultants. Our new logo clearly communicates our strength as a growing, integrated design team, with services that go well beyond architecture, engineering and interior design. 

Community Talk


Dundas Museum & Archives: A Museum Runs Through It

... Dundas Museum and Archives, inside and out, is a magnificent achievement with its articulation of new and old, its light-friendly geometry, its fluid harmonies of glass, brick, wood and other materials ...


MSA designs one-of-a-kind facility

The McMaster Institute for Music and the Mind is the first project of its kind in the world. A unique collaboration between engineer and architect, the 12,000-square-foot state-of-the-art facility was built as an addition atop the Psychology Building at McMaster University in Hamilton, Ontario.

Get In Touch

McCallum Sather Architects Inc.
157 Catharine Street N.
Hamilton ON L8L 4S4

Tel: 905.526.6700
Fax: 905.526.0906


View a list of our awards here.