像造汽车一样造房子，危旧住宅46天原地变新房

Core Insights - The article discusses the innovative approach to the renovation of a nearly 50-year-old residential building in Beijing, emphasizing the use of smart construction technology to achieve rapid and high-quality results [1][5]. Group 1: Project Overview - The renovation project of Building 28 in Xicheng District, Beijing, is the first pilot project for dangerous building reconstruction, utilizing a "from demolition to reconstruction" method to transform living conditions [2][6]. - The building, constructed in 1978, faced significant structural issues, including wall cracks and outdated infrastructure, prompting strong resident demand for renovation [2][3]. - The project commenced on September 5, 2025, and completed the main structure in just 46 days, allowing residents to move back into their new homes within six months [2][5]. Group 2: Innovative Construction Techniques - The project employed the "smart construction-MiC technology," which integrates industrialized building methods to enhance speed, efficiency, and sustainability [5][6]. - This technology allows for 90% of construction processes to be completed in a factory setting, significantly reducing on-site waste and carbon emissions [5][6]. - Each module of the building is assigned a unique digital identity code, facilitating future maintenance and management [5]. Group 3: Financial and Regulatory Innovations - A multi-party cost-sharing model was introduced, where residents, the government, and property units share the financial burden, making the project more affordable for residents [3][6]. - The project streamlined the approval process, achieving a 90% reduction in the time required for necessary permits and documentation [3][6]. - The initiative aligns with national policies promoting urban renewal and the transformation of old housing, indicating a shift towards more efficient urban development strategies [7][8]. Group 4: Broader Implications for Urban Development - The project serves as a model for similar urban renewal efforts across major Chinese cities, highlighting the potential for replicable solutions in high-density urban areas [6][8]. - Experts predict that the "from demolition to reconstruction" model will become a mainstream approach for old housing renovations, potentially accounting for 30%-40% of total renovation projects by 2030 [8].