This review paper explores circular material usage strategies and principles in the construction sector, aiming to assess and reduce barriers to the adoption of circular economy (CE) practices. The construction industry is a major contributor to global greenhouse gas emissions, raw material extraction, and waste generation. Applying CE principles could significantly reduce these impacts, but industry adoption is slow due to knowledge and experience limitations. The paper provides a comprehensive review of circular material usage principles and strategies, highlighting opportunities and innovations in recycling, digitization, robotics, and novel materials. Four case studies demonstrate the application of circular theory through a novel block system, recycled aggregate, modular kitchen reuse, and energy efficiency retrofit. The review emphasizes the need for strong regulatory frameworks, awareness initiatives, and international cooperation. Technological advancements such as AI, robotics, and blockchain are essential for optimizing waste management efficiency. Education on circular practices is also critical. Global collaboration is necessary to standardize circular construction approaches, promoting a more sustainable and resilient building industry. The paper also discusses the three principles of the circular economy: eliminating waste and pollution, using circular products and materials, and regenerating nature. Challenges include economic, informational, institutional, political, and technical barriers. Design principles for circular material usage include designing for circularity, material selection and management, and lifecycle assessment. Strategies for extending product lifespan and end-of-life considerations are also discussed, along with collaborative approaches and business models that promote circular economy practices in construction. The review highlights the importance of material recovery and recycling in reducing waste and conserving resources. The paper concludes that future efforts should focus on developing strong regulatory frameworks, awareness initiatives, and international cooperation to promote the adoption of circular economy practices in the construction industry.This review paper explores circular material usage strategies and principles in the construction sector, aiming to assess and reduce barriers to the adoption of circular economy (CE) practices. The construction industry is a major contributor to global greenhouse gas emissions, raw material extraction, and waste generation. Applying CE principles could significantly reduce these impacts, but industry adoption is slow due to knowledge and experience limitations. The paper provides a comprehensive review of circular material usage principles and strategies, highlighting opportunities and innovations in recycling, digitization, robotics, and novel materials. Four case studies demonstrate the application of circular theory through a novel block system, recycled aggregate, modular kitchen reuse, and energy efficiency retrofit. The review emphasizes the need for strong regulatory frameworks, awareness initiatives, and international cooperation. Technological advancements such as AI, robotics, and blockchain are essential for optimizing waste management efficiency. Education on circular practices is also critical. Global collaboration is necessary to standardize circular construction approaches, promoting a more sustainable and resilient building industry. The paper also discusses the three principles of the circular economy: eliminating waste and pollution, using circular products and materials, and regenerating nature. Challenges include economic, informational, institutional, political, and technical barriers. Design principles for circular material usage include designing for circularity, material selection and management, and lifecycle assessment. Strategies for extending product lifespan and end-of-life considerations are also discussed, along with collaborative approaches and business models that promote circular economy practices in construction. The review highlights the importance of material recovery and recycling in reducing waste and conserving resources. The paper concludes that future efforts should focus on developing strong regulatory frameworks, awareness initiatives, and international cooperation to promote the adoption of circular economy practices in the construction industry.