The post-war years were prosperous times for Canada. When The Commerce and The Imperial started to open new branches, they did so in the rapidly growing suburbs. The same suburbs where many Canadian families were building new homes and required mortgage financing. Although the banks had been barred from the mortgage business since 1871, the Canadian government now called upon them to provide mortgage services. Previously, life insurance companies provided the majority of mortgage funds; however, by 1953, those funds were no longer adequate. So, in 1954, Canadian banks started offering mortgages for new construction. By the end of that year, The Commerce had invested $25 million in mortgages; six years later, the amount had grown to $246.5 million.

Drive-in banks were introduced in the mid-1950s in response to the growth of suburbs around large cities. The Canadian Bank of Commerce introduced one of Toronto’s first drive-in branches in the Jane Street and Wilson Avenue area in 1955.