What is 1.5 bathroom?

A 1.5 bathroom generally means that there is one full bathroom with a sink, toilet, shower/tub, and one half bathroom that typically only has a sink and a toilet. It is a common configuration for homes with 2-3 bedrooms or small apartments. The half bathroom is usually located near the living areas, such as the living room or kitchen, for convenience. It allows guests to use the bathroom without entering the private areas of the home where the bedrooms are located.