What is the difference between habitable floor area and total floor area?
There are defined criteria for the measured area of a property to give the surface habitable, as opposed to the total floor area. For instance, any area below 1.80m head height is not counted within the habitable floor area, as well as staircases, walls, etc. As a lot of alpine properties have bedrooms and other accommodation within the roof space, the actual floor area is often much larger than the quoted surface habitable.