双城记：北部都会区计划的公告效应
A Tale of Two Cities: The Announcement Effect of Northern Metropolis Plan
- National University of Singapore（新加坡国立大学）
- Florida State University（佛罗里达州立大学）
- University of Hong Kong（香港大学）
机构由 AI 辅助整理，请以论文原文为准。
AI总结：
基于香港北部都会区计划公告的准自然实验，利用大规模交易与消费数据，发现该政策推高本地房价与消费、吸引高收入家庭，并加剧区域内不平等。
AI中文摘要：
利用香港2021年10月宣布北部都会区计划作为准自然实验，我们考察了其对家庭、企业和人口结构的影响。基于100,576笔住房交易、470万条消费记录以及区级人口统计数据，双重差分估计显示，处理区域内房价在一年内上涨了3.9%，同时消费增长了4.1%。企业进入数量扩大，高收入、高学历家庭流入。我们发现对深圳房地产市场存在温和且滞后的溢出效应，但企业反应不显著。尽管该政策缩小了跨区域不平等，却加剧了区域内不平等，并引发了对低社会经济地位家庭住房可负担性的担忧。
英文摘要：
Using the October 2021 announcement of Hong Kong's Northern Metropolis Plan as a quasi-natural experiment, we examine its impacts on households, firms, and demographics. Leveraging 100,576 housing transactions, 4.7 million consumption records, and district-level demographic data, difference-in-differences estimates show housing prices in the treated region rose by 3.9% within one year, alongside a 4.1% increase in consumption. Firm entry expanded, with inflows of higher-income, higher-educated households. We find a mild, lagged spillover to Shenzhen's housing market but no significant firm response. While the policy narrows cross-region inequality, it increases within-region inequality and raises affordability concerns for lower-SES households.
