Remixing our cities – current research on circularity in the construction sector

The European Green Deal is aiming for a transition from the current linear economic model to a much more sustainable and resource-efficient circular model. Since the construction industry is responsible for 37% of Europe-wide waste, it will be a key sector for the successful implementation of this goal. However, we can currently find many sector-specific challenges slowing the pace. On the one hand, the complexity of the sector and the multiplicity of actors involved. On the other hand, the dichotomy between the immanent uncertainty that lies within all reuse strategies and an ever-rising pressure for an increased technical performance respectively liability exclusion of building components. A successful transformation of the construction industry towards a circular economy would hence require changes throughout the whole life cycle of the building stock, an extensive and comprehensive exchange of information and the implementation of strategies for dealing with uncertainties. This includes also the development of new construction standards, which in turn can be expected to have an influence on the resulting architectural design. The focus of this paper is to present two current research projects on these topics, with a focus on the potential implications and future fields of action for designing architects.