Research On The Pricing Of Public Rental Housing For “Sandwich Layer” Group Under PPP Model

In the past decade,the central government has continuously introduced relevant policies on public rental housing,and the construction scale of public rental housing has been expanding.In order to realize the large-scale and sustainable development of public rental housing and relieve the financial pressure of the government,it has become an emerging trend to apply PPP model to the public rental housing of "sandwich layer" group.Public rental housing in PPP mode should not only meet the nature of affordable housing but also the profit demand of social capital,which are contradictory.Therefore,a more reasonable rent pricing is particularly important.However,at present,there is still no clear and unified pricing method for public rental housing projects through PPP cooperation in China.In this regard,based on the principle of system dynamics,this paper establishes the pricing model of public rental housing for "sandwich layer" group under PPP mode,providing a new idea for the pricing of public rental housing.Starting from the goals of the government,social capital parties and tenants,and starting from the internal and external aspects of the project,this paper identifies the influencing factors of public rental housing pricing based on the NPV method and literature research method,and divides all the factors into three categories: cost,income and income.Through the interpretation structure model(ISM)and Matlab software,the author sorted out the intricate correlations among the influencing factors and divided them into six levels.On the basis of the classification results,using Vensim PLE software to map the subsystem and the pricing system of causality diagram and the flow chart,stock by constructing the equation of relationship between variables,the PPP mode of public rental housing pricing system dynamics model,and the model of dimension consistency test and model test,a preliminary verify the correctness of the model.Finally,the project of "lambo apartment area B" in xi 'an high-tech zone was selected as a case for empirical study,and the simulation results were compared with the actual situation to verify the rationality and applicability of the model.Finally,the model established in this paper is used to develop the pricing results of the project over the years during the franchise period,and the sensitivity analysis of some key variables is carried out to provide corresponding policy Suggestions for the public rental project.The research results show that build on the basis of the principle of system dynamics of the PPP mode "sandwich layer" groups of public rental housing pricing model,the simulation result corresponds with the change of the social and economic development situation,and can balance the government,the social capital and the tripartite interests of the tenant,make a reasonable pricing,rent both address the diversity of the combined action of many factors,also has realized the dynamic simulation of the franchising period,for the government pricing and provide a basis of social capital investment decisions.