The calculation of the surface area of a house for sale is based on what is commonly known as the 'living area'. In Switzerland, there are no common rules defined by law. However, some standards are generally applied in most cantons. Generally speaking, balconies, terraces, loggias, verandas, unfinished attics, basements, cellars, garages and any non-habitable outbuildings such as garden sheds or sheds are excluded from the living area.