Based on these, the paper has identified a coverage of Urban housing social security in Changsha City: overall is 20%, and include 15% of affordable housing and 5% of subsidized rental house.

在此基础上，确定住房保障体系的覆盖面显得尤其重要，研究表明：长沙市的住房保障覆盖面总体为20%，其中经济适用房占15%，廉租住房占5%。

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Abstract: Public rental housing is the important part of housing security system, the rationality of its pricing mechanism will produce an effect on the achievement of security function.

[摘要]公共租赁住房是我国住房保障体系的重要组成部分，其定价机制是否合理将直接影响保障功能的实现。

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Abstract: the public rental housing security level and the housing rent subsidies of the family unit are the core problems for the design of public rental housing system.

摘要：公租房的保障水平、以家庭为单位的租金补贴金额的测算是公租房制度设计中需要研究的核心问题。

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