According to the Intergovernmental Panel on Climate Change, the building sector accounts for 32% of global energy consumption, 19% of energy-related CO₂ emissions and 51% of global electricity consumption. This book aims to develop a new and comprehensive framework that assists users in assessing and updating sustainability from a user’s perspective. As a result, this book contributed those main points: 1) it determines the current users’ perspective of four types of buildings and highlights the weak areas that require more attention from the users’ perspective, and 2) it proposes various rehabilitation alternatives that upgrade the users’ perspective in sustainable buildings as a step towards establishing a comprehensive global sustainability assessment framework for buildings from the user’s perspective.