Beijing’s real estate market, a key part of China’s economy, plays a crucial role in the nation’s development. Any downturn or collapse in housing prices in the city would have severe consequences for both the real estate sector and the broader economy. This paper aims to explore whether a housing price bubble existed in Beijing from 2014 to 2024. This study investigates the areas where these price bubbles are mainly concentrated, analyzing various indicators, such as the house price-to-income ratio, house price-to-rent ratio, and control charts. This study employs the rational expectations model to measure potential price bubbles, integrating these indicators to assess housing price volatility. The findings indicate clear signs of a housing price bubble in 2016 and 2017. From the perspective of Beijing’s districts, Huairou, Pinggu, and Miyun exhibited clear signs of housing price bubbles, while Changping, Shunyi, and Chaoyang displayed comparatively minimal housing price bubbles. This study utilizes nearly a decade of fresh district-level data to study housing price bubbles in Beijing, which contributes to the exploration of the risks associated with Beijing’s real estate market.

This study investigates the impact mechanism of distorted land supply structures on green economic efficiency in Chinese cities, with a particular focus on the mediating and moderating role of the real estate market. Innovatively, the study constructs a comprehensive index to measure land supply structure distortion and employs spatial econometric methods for empirical analysis using panel data from 285 prefecture-level and above cities in China from 2010 to 2022. The findings reveal that: (1) distortions in land supply structure significantly hinder the improvement of urban green economic efficiency (GEE); (2) this inhibitory effect exhibits a significant spatial spillover effect; (3) housing prices play a notable mediating and moderating role in the relationship between land supply structure distortion and green economic efficiency; (4) the impact mechanisms demonstrate significant regional heterogeneity. These findings offer important policy implications for optimizing urban land supply structures and promoting green economic development.