Based on the analysis of this paper

Based on the analysis of this paper, the supply factors of urban housing, housing prices are mainly affected by the cost of housing, including housing and land costs. In terms of housing cost: the engineering cost of civil engineering decoration and the cost of infrastructure public facilities account for a large proportion of the cost value. The average disposable income of consumers is the main factor of housing supply. Although the income of the low-income group will increase, the increased income is far from reaching the level of housing purchase, which makes the increase of income unable to influence the purchase intention of the low-income groupHowever, if the main body of income increase is the middle-income group, because their basic needs such as clothing, food, housing and transportation have already had a good foundation, the increased income will be used to improve living standards and living conditions, so as to increase the willingness to buy housing. The high-income group, because they are almost satisfied with their life (including housing), will increase their income mainly for investment or savings, of course, including real estate investment, which will also partially increase the housing purchase rate. Therefore, the difference of income class will significantly affect the consumption level of house purchase, and then affect the housing price.