Firm History & Approach

1919 - 2019


The year 2019 marks our firm’s 100-year anniversary. As one of the oldest continuing architecture practices in Canada, we are celebrating many landmark buildings as well as the dedication, friendship and respect that are behind their making. Thank you to our clients, collaborators and colleagues who have contributed to this legacy. 

RDHA is a Toronto-based studio specializing in architecture for the public realm. Founded in 1919, the firm has a wide-ranging body of work, encompassing corporate headquarters, industrial facilities, academic buildings, transportation facilities, recreation centres, libraries, secure buildings and interiors.

Over the past ten years we have focused on producing intelligent, concept driven architecture of the highest caliber. The firm now feels and acts like an emerging design studio, while our 100 year legacy provides a solid backbone of technical and managerial experience.

Consequently we have re-emerged as one of Canada's most acclaimed design firms, winning more than forty provincial, national and international awards --most notably three Governor General's Medals, the 2018 Royal Architectural Institute of Canada (RAIC) Architectural Firm Award, and the 2014 RAIC Young Architect Award for design partner Tyler Sharp.