The notion of circularity is increasingly present in debates about sustainable buildings. Reusing construction elements is often considered a good strategy to achieve a substantial decrease in the environmental impact of construction industry. However, a range of cultural, economical and social  challenges need to be overcome in order to implement reused elements in ambitious architectural projects . This book examines these questions and offers some suggestions on how they may be answered. It develops an historical perspective on reuse practices, gives an insight on current trends and examines future perspectives.

Rotor is a cooperative design practice that investigates the organisation of the material environment. They develop critical positions through research and design. Besides projects in architecture and interior design, they also produce exhibitions, books, economic models and policy proposals.