30-40" is your standard size for single bathroom vanities, with 36" vanities being far and away the most commonly available size. These combine adequate storage space with an average footprint for a versatile bathroom vanity that will look great in any reasonably sized bathroom. Since this is one of the most common sizes for a bathroom vanity, it´s also where you´re likely to find the most variety of styles, from ornate, furniture-inspired antique vanities to sleek, minimal modern styles and everything in between. If you´d like to have two sinks in your bathroom, but don´t want or have space for a larger unit, a pair of 30" vanities or 32" inch vanities allow for a greater versatility of furniture placement and bathroom layout, and often cost less for two than a larger single vanity.
