This book constitutes state-of-the-art research covering a wide range of topics including climate change and carbon emissions, air quality and pollution control, urbanism, land and circular economy, sustainable transport, energy, water, biodiversity and greenery, environmental services, housing, and construction with respect to the built environment. The concepts of sustainability in built environment conclude with reimagining the city. The content includes pedagogical features such as examples, simple flowing language and over 100 figures. The book aims to motivate architects, engineers, consultants, builders, and planners to respond to the challenges of sustainability in the built environment.