The Internet of Things “IoT" concept is increasingly being observed in modern workplaces and buildings to intentionally increase the efficiency and effectiveness of how a building is used by organizations and managers. “IoT" applications in Architecture enhance spaces by transforming spaces and pursuing sustainability. This paper describes the emergence of IoT Technology in space impacting the built environment. IoT offers a valuable enabling technology that bridges the gap between physical things and software components and is seen as an essential tool to increase the efficiency of building automation systems and transform the dynamics of building management. The study hypothesizes that the concept of "Internet of Things" application in buildings will realize energy saving ideas. The work follows a theoretical analytical methodology. The theoretical part addresses the main definitions, advantages and presents a review on IoT applications. The analytical part focuses on case studies by which examples from different parts were chosen highlighting emergence of IoT strategies in buildings, aiming to emphasis on lessons learned from analysis of presented case studies. Followed by a case study from Egypt (Administrative Buildings in Beverly Hills Compound, Elsheikh Zayed), where a survey was implemented. An analytical study was conducted to explore the applicability of potentials of IoT to sustainable concepts in architecture. The results confirm that the application of IoT to buildings is a source of positive benefits for buildings. The research concluded by recommending using IoT technology, as understanding its advantages and disadvantages will be of great benefit towards sustainability.