Bathrooms in modern times have evolved from being a place to simply take care of personal hygiene to a room in which to linger and relax. the use of bathing areas for this purpose is not new. The Romans and the Greeks regarded bathing as a social and relaxing pastime. The interior designer has to do research to be able to select the proper basic fixtures (sinks, toilets, bathtubs, and showers). Then there are the special items that may be included such as : multiple sinks, Jacuzzi bathtub, multi-head showers, steam room, sauna, bidet, laundry facility, exercise area, dressing area and a resting area. Homes usually include more than one bathroom. there may be a master bath, family bath, and a half-baths (powder room and mud room). bathrooms designs will vary depending on the size of the family, the number of bedrooms and the needs of each individual.
Photos below will show you the building codes and typical bathroom designs.