When Cointegration Misleads: Regional Evidence on Housing Price Determinants in China

Using data from 29 regional housing markets in China, this study examines the long-run relationships between housing prices and key macroeconomic variables. Conventional cointegration methods can be misleading, as estimated coefficients often contradict standard demand-supply theory even when statistical tests indicate cointegration. Among the variables, only real income consistently explains regional housing price dynamics, whereas real interest rates and building costs fail to do so consistently across markets. Region-specific models reveal substantial heterogeneity and are both statistically robust and economically meaningful. Panel cointegration tests that account for cross-sectional dependence fail to detect cointegration when such heterogeneity is ignored. These findings highlight the limitations of uniform national approaches and underscore the need for tailored, region-specific housing policies.