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Research on the intermediary effect of development lag in the rise of house price
ZHANG Shuai, WANG Xueqing, LIU Bingsheng, HOU Xinyu
Systems Engineering - Theory & Practice
2019, 39 (1):
70-88.
DOI: 10.12011/1000-6788-2018-0967-19
In view of development lag has become the core factor to limit the efficiency of housing supply. Inspired by the continuous upgrading of domestic land leverage, we try to verify the mechanism of land leverage and development lag. We first use real option model to establish a more practical double stochastic differential equation and partial equilibrium model shows that when the market expectation is stable, the land development cycle is mainly determined by the land lever (i.e. the ratio of land price to housing price). In the past 2002-2015 years, the panel data regression of 31 provinces in China showed that, after controlling the external factors such as population density effectively, on average, the land leverage increased by 100 percentage points, and the development lag increases 20 percentage points. This conclusion is still stable after the test of the time trend, the impact of exogenous events and the location of the region. Then, the three stage mediating effect is established, and the overall mediating effect is 46% with the promotion of land leverage, the direct cost effect has become the main way to influence housing price compared with the indirect way of development lag. At the same time, there is a similar accelerator effect in land leverage, that is, with the improvement from lower to higher level, the positive spillover effect of land leverage on housing prices is stronger, and the effect is increased by about 80%. The study highlights the importance of structural reforms from the land supply side which implies the importance of effective management of development lag as well as land leverage in the overall policy framework of real estate regulation.
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