Abstract
The idea of designing to eliminate waste through the reuse of materials in a closed-loop was first brought by William McDonough and Michael Braungart in the theory of Cradle to Cradle in 2002. Raw materials are not removed from their life cycles in a circular economy; instead, they are kept in the economy for as long as feasible through efficient and clever utilization. Their worth is also kept by maximizing re-use or recycling. To have the lowest environmental effect, the circular economy needs a fundamental rethinking of value chains and business models, of product design, and of the wider economic systems in which they are used. In this research we will get a thorough understanding on the strategies used to support circular economy in the building industry since it is proven that the construction and demolition waste are the major producers of waste. Further due, by analyzing and comparing two case studies we will be able to see how far the research has come to when we talk about its application in the real world, what are the current challenges and what are the lessons to be learnt.