大户型与小户型的关系包含着社会对效率和公平的取舍。二者的矛盾也在一定程度上测量出了企业利益最大化与社会福利最大化的距离。对开发商来说，针对高收入人群的大户型利润更加丰厚，尤其是地理位置较为优越的地段，建设大户型更像是资源的优化配置。但毫无疑问，大户型的建设意味着同样的土地面积能够满足的安家需求越少，大量瞄准小户型的中低收入人群只能望房兴叹。

Large and small-sized unit that contains the relationship between social equity and efficiency of trade-off. The contradiction between the two has to a certain extent a measure to maximize the interests of enterprises and social welfare to maximize the distance. To the developers for high-income groups of large units more lucrative profits, especially in the more advantageous geographical location of the lot and build large units are more like the optimal allocation of resources. There is no doubt that the large size means that the building of the same land area to meet the needs of the less settled down, targeting a large number of small units in the low-income people can only hope that they can not afford housing.