Though mostly a residential neighborhood, Belmont-DeVilliers did have a mix of businesses and a few business-residences, where the owner lived in the same building as the business. The businesses varied from normal, everyday stores (such as groceries, dry goods, bakeries, pharmacies, and meat and fish markets) to the specialized (tailor, barber, and saloons), and finally to some that are more surprising (bicycle repair, blacksmiths, and an undertaker). The number of residents only changes slightly in this decade and the diversity of businesses show that the neighborhood could practically support itself regarding the availability of day-to-day goods.
This decade had four city directories that landed about every 2-3 years and provide a steady supply of information between the 10 year gap of federal censuses. Throughout the 1910s, the number businesses increased until 1916 where they peaked and started to decline by 1919. The economic slump that started in 1914 may be one cause of the change. The total number of residences fluctuates slightly and the resident-businesses takes the opposite movement of businesses. The lowest of these multi-use buildings are recorded in 1913 but by 1919 there is a steady, if not slow, increase.
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