RDHA is a Toronto-based studio specializing in architecture for the public realm. Originally 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 98 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 major provincial, national and international awards--most notably three Governor General's Medals and the 2014 Royal Architectural Institute of Canada (RAIC) Young Architect Award for design partner Tyler Sharp.