近年来，在土地和住房开发已经逐步市场化的基础 上，我国相关部门制定了职工已购公房和经济适用房上市出售管理制度、收益分配制度以及鼓励居民通过二级市场扩大住房消费的税收政策，部分城市住宅二级市场的交易十分活跃，存量住房开始成为供应与交易的重要组成部分。通过二级 In recent years, based on the gradual marketization of land and housing development, relevant departments of our country have formulated the taxation policies on the sale and purchase of public housing and affordable housing for employees, the income distribution system, and the encouragement of residents to expand housing consumption through the secondary market , Some secondary transactions in urban residential secondary market is very active, stock housing began to become an important part of supply and trading. Pass two levels