近年来,在房地产市场呈现一派繁荣景象的同时,有关房地产的纠纷也日益增多,其中有相当一部分涉及房屋建筑面积,即所谓的“缩水楼”或“膨胀楼”。那么,为什么会出现这种情形?房屋建筑面 In recent years, while the real estate market has been booming, disputes over real estate have also been increasing. A considerable part of them are involved in the gross floor area of ​​housing, the so-called “Shui Shui Lou” or “Expansion Building.” So, why did this happen?