This study investigates the role of digital technologies, specifically Building Information Modelling (BIM) and City Information Modelling (CIM), in sustainable urban renewal. The study reviews the literature on urban renewal and the application of BIM and CIM technologies. The findings show that digital technologies play a crucial role in facilitating the flow and sharing of information, improving the transparency of decision-making, and enhancing public participation. The study emphasises the need for interdisciplinary collaboration and technological innovation to achieve more sustainable and liveable urban environments.

This research explores the role of digital platforms in enhancing green and low-carbon urban renewal and building optimization. The study, through various methods, develops a comprehensive building optimization strategy system based on digital platforms, integrating technologies like big data and AI, offering new opportunities for construction lifecycle management[1][2]. Case studies show significant energy savings and carbon reduction, highlighting the platforms' key role in design optimization[3]. The study concludes that advancing digital platforms will further green construction industry development, with enhanced data capabilities through technologies like 5G and blockchain[4]. It suggests future research on digital platform interconnectivity and the economic and social benefits of green technologies.