The construction industry significantly contributes to global greenhouse gas emissions, raw material extraction, and waste production. Implementing circular economy (CE) principles in this sector could greatly reduce these impacts. However, adoption within the industry remains slow due to barriers such as limited knowledge and experience. This chapter aims to assess and help overcome these obstacles by providing a comprehensive analysis of circular material usage principles and strategies in construction. It also highlights opportunities and enablers of change, including innovations and emerging technologies in recycling, digitization, robotic systems, new materials, and processing techniques. Four case studies illustrate the application of circular theory through a Bio-Building, Urban Mining and Recycling (UMAR) Experimental Unit, Open-spaced apartment, and an “Escuela Politécnica Superior”. The conclusions emphasize the need for strong regulatory frameworks, awareness initiatives, and international cooperation. Integrating technological advancements like AI, robotics, and blockchain is crucial for optimizing waste management. Additionally, education on circular practices is vital. By fostering global collaboration, standardizing circular construction approaches can lead to a more sustainable and resilient building industry.