Today, thanks to advanced plumbing and modern technology, the bathroom may well have evolved as far as it can. With luxury steam rooms and hydrotherapy baths, it's difficult to imagine how bathrooms could get any more sophisticated. That said, the bathroom, like any room in the house, is ever changing in terms of design trends.
A full sized standard tub or combination shower and tub measures 32 inches by 60 inches. A standard toilet is 20 inches by 25 inches and the vanity is usually 19 inches deep and space will determine the width of the sink vanity. There are many small bathroom floor plans that easily incorporate these fixtures in a bathroom as small as 5 feet by 8 feet. Of course, a larger area naturally provides more options. An additional 2 feet of space will allow for a very useful linen closet, perhaps placed at the end of the tub. However, storage can be taken into account to include spacious medicine cabinets and narrow depth cabinets for the wall above the toilet. Lighting and ventilation must also be looked at ahead and if a window does not already exist, fluorescent lighting is available in abundant styles, some with ventilation fans incorporated into the design.
Materials. Look for bathroom basins made from quality materials. You don't want anything that will be easily damaged. Scratches can make it look old and dingy so get something that is highly resistant to scratching. This will keep it looking like new for years to come and you will appreciate the way it prolongs the value of your investment.