The building is designated under Part IV of the Ontario Heritage Act since November 26, 1975.
There is also a heritage easement agreement on the building, Registered C440805, since January 7, 1988.
The building has a heritage designation plaque to inform the public, placed in 1978.

Per the official designation: "The Canada Permannent Trust Building, 320 Bay Street at Adelaide 
Street West (SW), 1929-30 by F. Hilton Wilkes & Mackenzie Waters; Mathers & Haldenby, Associates.
Sproatt & Rolph, Consultants.

The Canada Permanent Trust Building is designated to be of architectural value as being one of 
the finest highrise bank buildings of its period in Canada.
Designed using the simplified classical forms of the Style Moderne, it combines an emphasis on its vertical height appropriate to its basic form, with the impressive vaulted banking hall, characteristic of bank 
buildings at the beginning of the Century.
The building is also important as a part of the Bay 
Street canyon of high-rise buildings that has come to be regarded as symbolic of Toronto's financial quarter."
The building is designated under Part IV of the Ontario Heritage Act since November 26, 1975. There is also a heritage easement agreement on the building, Registered C440805, since January 7, 1988. The building has a heritage designation plaque to inform the public, placed in 1978.
Per the official designation: "The Canada Permannent Trust Building, 320 Bay Street at Adelaide 
Street West (SW), 1929-30 by F. Hilton Wilkes & Mackenzie Waters; Mathers & Haldenby, Associates. Sproatt & Rolph, Consultants.
The Canada Permanent Trust Building is designated to be of architectural value as being one of 
the finest highrise bank buildings of its period in Canada. Designed using the simplified classical forms of the Style Moderne, it combines an emphasis on its vertical height appropriate to its basic form, with the impressive vaulted banking hall, characteristic of bank 
buildings at the beginning of the Century. The building is also important as a part of the Bay 
Street canyon of high-rise buildings that has come to be regarded as symbolic of Toronto's financial quarter."
Canada Permanent Trust Building