预售商品房住宅以套内建筑面积计价，但实际上单价里已将公用部分的面积折算进去，故购房款中已包含公用部分的分摊，购房人理应享有公摊面积的所有权和治理权。

• Open to booking commodity room house in order to cover inside floor area valuation, but actually in unit price already went in the area convert of public share, reason buys the share that public share already included in house money, behoove of the person that buy a house is enjoyed equally shared the droit of the area and administrative power.