“十五五”城市群一体化有望加速，专家建言应建设住房统一大市场

Core Viewpoint - The article emphasizes the importance of regional coordinated development as an inherent requirement of Chinese modernization, highlighting the accelerated push for urban agglomeration integration and metropolitan area development in the context of the "14th Five-Year Plan" and upcoming policies [2][5]. Group 1: Urban Agglomeration and Metropolitan Area Development - The "14th Five-Year Plan" identifies 19 national urban agglomerations and 19 national metropolitan areas, which are crucial for promoting human-centered urbanization and regional coordinated development [4]. - The Central Urban Work Conference in July 2025 prioritized optimizing the modern urban system, focusing on developing group-style and networked urban agglomerations and metropolitan areas [5]. - The "Opinions on Promoting High-Quality Urban Development" issued in August 2025 stresses the need for orderly urban agglomeration integration and metropolitan area development, aiming to enhance the comprehensive carrying capacity of cities [5]. Group 2: Housing Affordability and Policy Recommendations - Research indicates that housing affordability inequality in China is primarily reflected in the price-to-income ratio rather than the rent-to-income ratio, suggesting a need for unified housing policies in integrated regions [4][9]. - The housing affordability index for 135 cities shows a decrease in the rent-to-income ratio from 30% in 2010 to 21% in 2024, while the price-to-income ratio fluctuated from 7.24 in 2010 to 8.94 in 2020, then back to 7.26 in 2024 [8]. - The study highlights that more developed urban agglomerations exhibit greater housing affordability inequality compared to less developed ones, indicating the necessity for a unified housing market to address urban housing issues [9].