Core Insights - The "Unified Housing Listing System" in Nanjing has been officially launched, covering nearly all buildings in the city from construction to demolition, creating a digital system that is verifiable, shareable, and traceable [1][2] Group 1: System Overview - The system encompasses approximately 300,000 buildings and 6.06 million housing units, establishing the largest urban-level BIM (Building Information Modeling) foundation in the country [1][2] - The project team utilized artificial intelligence to automate the conversion of CAD construction drawings into 3D BIM models, significantly reducing modeling time [2] - The system has achieved comprehensive data coverage of the entire lifecycle of buildings, forming a "one house, one code, fully traceable" management mechanism [2] Group 2: Data Management and Efficiency - Over 30,000 buildings have been modeled down to individual components, achieving an eight-level granularity from property area to specific building components [3] - The data for the system originated from a 2019 project that collected foundational data on existing housing, with further collaboration from various stakeholders to gather architectural drawings [3] - The system processes an average of over 460,000 requests daily, with a cumulative usage of 340 million times, indicating high engagement and reliance on the platform [3] Group 3: Public Services and Governance - The system serves as a core data foundation for various housing-related services, enhancing transparency and efficiency in property transactions and management [4] - It allows real-time verification of housing authenticity, safeguarding against false information, and ensures comprehensive oversight of transaction funds [4] - The system supports emergency management by providing automatic alerts for unsafe buildings and facilitating rapid responses to pest control needs [4]

Core Insights - The "Unified Housing Project System" in Nanjing has completed acceptance and entered a deep application phase, allowing citizens to manage real estate transactions securely through the "Nanjing Housing Micro-Government" platform [2] - The system, initiated in March 2022, has developed a comprehensive data framework for real estate, covering eight levels of granularity, providing a full lifecycle management support for properties [5] - The unified system addresses issues of data duplication and inconsistency, establishing a reliable and dynamic real estate data foundation, enhancing governance precision and response speed [7] Group 1 - The system enables citizens to verify real housing sources, ensuring safer transactions and regulated funds [2] - It supports compliance checks for rental housing, management of dangerous buildings, and renovation of old communities through innovative management mechanisms [7] - The Nanjing housing authority plans to deepen system applications, promote inter-departmental data sharing, and explore the creation of a "digital twin" for housing management [7] Group 2 - The system provides a unique authoritative data source for the city's real estate sector, facilitating accurate and real-time updates [7] - It aims to optimize standards and technology, sharing replicable "Nanjing experience" to promote urban renewal and smart governance [7]