The built environment is pivotal in shaping sustainability, serving as a dynamic system that balances energy use, materials, and human well-being. In recent years, sustainable building management has evolved from energy conservation to more holistic approaches integrating ecological integrity, socioeconomic benefits, and technological innovation. Digital leadership and emerging technologies, including digital twin (DT), have become essential to this transformation. DT offers real-time digital replicas of physical structures, enhancing building management by improving predictive maintenance, energy optimisation, and occupant comfort. When integrated with the WELL Building Standard (i.e., WELL), which emphasises health, comfort, and sustainability, DT can enhance building performance further. However, the existing literature on the integration of DT with WELL is fragmented, with limited empirical studies exploring their combined impact on sustainability. Moreover, gaps exist in leadership frameworks necessary for effectively integrating digital technologies to achieve sustainability goals. This study aims to synthesise current knowledge, identify emerging trends, and highlight gaps shaping future research on integrating DT with WELL in sustainable building management.