Montgomery Sisam designs buildings with the past, present, and future in mind.

Montgomery Sisam designs buildings with the past, present, and future in mind. We respect the contexts we occupy, we advocate for our clients, and we deliver lasting architecture.

We are a group of architects, designers and technicians with diverse backgrounds, and a shared social consciousness. Our process is grounded in a sense of responsibility to the public, driven by dialogue and research, and focused on social, economic, and environmental sustainability. Since 1978, we have been creating spaces for living, learning, and healing, delivering a wide variety of projects. While our work spans multiple sectors and scales, our objective is consistent: to provide architecture that people connect with.

We believe that outstanding architecture begins with curiosity, and through a personalized and rigorous approach, we strive to generate work with a local presence and a global impact.


At Montgomery Sisam, we understand that Land Acknowledgement is one of many steps towards truth and reconciliation. It is an important reminder that we have been invited to share and protect the land on which we work and live. We carry this reminder with us in our design practice as we move forward with a renewed sense of responsibility and accountability to its original keepers.

Montgomery Sisam  acknowledges that we come together on the traditional territory of many nations including the Mississaugas of the Credit, the Anishnabeg, the Chippewa, the Haudenosaunee and the Wendat peoples. We further acknowledge that through our practice we engage with the lands of many diverse First Nations, Inuit and Metis people. We honour the long-standing history of these lands and the enduring presence and resilience of Indigenous peoples.