Calgary: Bankers Hall 646ft or 197m

https://en.wikipedia.org/wiki/Bankers_Hall

http://skyscraperpage.com/cities/?buildingID=6993 E 819,166sq.ft.

76,103 m²

http://skyscraperpage.com/cities/?buildingID=7073 W 828,380sq.ft.

76,959 m²

https://en.wikipedia.org/wiki/List_of_tallest_buildings_in_Calgary#Buildings



http://skyscraperpage.com/diagrams/?searchID=90278063&offset=25