Over time, mcCallumSather and Watson MacEwen Teramura Architects (WMTA) have worked alongside one another across projects, pursuits, and shared opportunities. Through that work, our teams developed a strong understanding of each other’s strengths, a shared approach to collaboration, and a relationship built on trust.

Today, we’re formalizing that relationship through a strategic partnership.

This next step reflects how our teams already work: bringing together the right expertise around project goals and client needs. By formalizing the relationship, both firms are creating new opportunities to collaborate across architecture, engineering, heritage, laboratory design, and specialized technical expertise.

WMTA brings deep experience in heritage and lab design, while mcCallumSather contributes integrated architecture and engineering expertise with a long-standing focus on sustainability and high-performance design. Together, the partnership creates greater opportunities for knowledge sharing, integrated project delivery, and broader support for increasingly complex work.

The partnership also strengthens our presence across regions, including an expanded footprint in Ottawa and increased access to expertise across both organizations.

For clients and collaborators, existing relationships and project teams remain unchanged. Day-to-day contacts, ongoing work, and project delivery continue as they always have.

What changes is our ability to support projects in new ways: with greater flexibility, expanded capacity, and stronger collaboration where a combined team can create additional value.

“This partnership builds on years of collaboration and trust between our teams,” said Drew Hauser, Director at mcCallumSather. “Formalizing that relationship creates opportunities to learn from one another and better support increasingly complex work while staying grounded in the relationships that got us here.”

“We’ve always seen strong alignment between our firms — in how we work, the value we place on relationships, and our commitment to thoughtful design,” said Allan Teramura and Rick MacEwen of WMTA. “This creates opportunities to build on those shared values while continuing to put clients and collaboration at the centre.”

As projects continue to evolve and become more complex, integrated thinking and strong collaboration matter more than ever. This partnership reflects a shared commitment to meeting that challenge together.