After moving back to Montreal, Perks worked with the office of George F. Eber as Project Architect on two buildings, the Sermons From Science Pavilion and the Alcan Aquarium for the Expo 67.
[2] Starting a private practice in Calgary in 1972, Perks developed and planned large commercial projects before returning to Ottawa in 1975 to work for the Foreign Affairs Department once more.
Some of her notable projects include the embassies in Tokyo, London, Beijing, Paris, Mexico City, Lagos, Riyadh, Washington, Moscow, and Belgrade.
[5] This includes the process of procuring embassy projects as well as the selection of Canadian architecture firms to provide a design proposal.
After retiring from her work in the public sector, Perks continued to remain active in the design industry and founded a small architectural practice in Toronto with partner Sheila Penny named Perks+Penny (1992–1994).