The present-day urban metabolism of the cities requires them to be smart and circular to facilitate balance between the ecological systems and the societal infrastructure. Cities have undergone morphological transitions since the historic age to the contemporary times, thus adapting to the ever changing demands of its inhabitants. The conference engages in issues of sustainability and urbanization including health and wellbeing, green spaces, energy efficiency of buildings and green infrastructure, adaptation and resiliency, circular economy in built environment, etc. These themes would highlight the interdisciplinary discourse on various challenges and path-dependency of the cities and built environment that transformed them maintaining the cultural, historical, societal, geographical identity along with spatial configurations. Technological versus nature-based solutions inclusive of top-down and bottom-up approaches will be deliberated. SBEUT aims to provide a platform for researchers, professionals, experts and scholars from developed and developing economies to share their expertise and perspectives on these issues.