Hedonic Price of Housing Space
利用新加坡一项为现有住房统一增加空间的独特项目，通过断点回归和双重差分法估计不同面积住房的空间边际价格，发现额外空间平均使转售价格提高7%，且增幅因原始面积而异。
Abstract This article estimates hedonic prices for different levels of housing space, by exploiting a unique space‐adding project in Singapore that added a uniform amount of space to each existing housing unit regardless of the original size. This space adding program was carried out if sufficient residents vote in favor of space adding. Using a difference‐in‐differences (DiD) strategy after restricting our sample to narrow margins around the voting cutoff, we find that the additional space increased the resale price of a housing unit by 7% on average, and the extent of price appreciation varied significantly across the original size of the units.