Firm History & Approach

1919 - 2021

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 15 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 90 provincial, national, and international awards—most notably five Governor General's Medals in Architecture, the 2018 Royal Architectural Institute of Canada (RAIC) Architectural Firm Award, and the 2014 RAIC Young Architect Award for Design Partner Tyler Sharp.

The firm’s name was changed from Rounthwaite, Dick & Hadley Architects Inc. in 2018. History highlights in Canadian Architect 07/19 article “Legacy Firm” by Elsa Lam.