EX3 Condos in Mississauga Square One Condos Priced from $575,900! FOR MORE INFORMATIONÂ REGISTER HERE EX3 Condos will complete the wildly successful Exchange District community. The vision has come to fruition. Exchange District is a city unto itself, and it is right in the middle of it all. Restaurants of the highest quality. Brands that are in high demand. Details of opulence. Square One...