Is the residential property fee calculated according to the construction area or the interior area?

According to the relevant provisions of the national property management regulations, unless there is a special agreement, in general, the property management fee is charged by the owner according to the construction area of the house, which includes two parts: one part is the interior construction area and the other part is the shared area. Houses that have not yet obtained the real estate license shall temporarily be subject to the sales area on the purchase contract signed by the developer and the purchaser; Finally, the construction area measured by the housing survey department and written into the real estate license shall prevail.