The choice for a double or single sink bathroom vanity is primarily influenced by the available space in the bathroom, among other factors such as the number of people sharing the bathroom and their personal space preference and selling power and decision. Usually, double sink vanities require a minimum width of 48 inches but are more common in standard sizes of 54 or 60 inches wide. Within Bathroom Vanities with Tops with double sinks, check out our Transitional, Traditional and Modern style options.