Changing inter-organizational collaborative behaviour in circular construction projects

collaborative practices in the design phase of circular construction projects to support the transition to a circular and low-carbon construction economy. The new practices of collaboration between contractors, clients, architects and suppliers in the design phase is perceived to be the biggest challenge in this transition. To withdraw from familiar and fixed social practices it is of cardinal importance that the Architecture, Engineering and Construction (AEC) sector develops and adopts interventions influencing both people and organizational behaviour. This sector can, being one the largest producers of CO2 and waste, significantly contribute to CO2 reduction and resource depletion by reducing impact on environment and climate during harvesting, manufacturing, production, use and reuse of constructions and construction products. However, the emergence and acceptance of new practices related to roles and responsibilities of the organizations involved in the circular construction economy, ask for reflection on behaviour. Through reflective intervening, employees negotiate and give meaning to new work practices, thus enabling a continuous and rapid development of necessary practices. To address the transition we adopt a socio-technical approach, which understands circular construction projects as networks in which both human actors and technological artefacts are involved. The results of the study are the conditions for successful inter-organizational collaboration and successful work practices which are presented in a toolbox. The toolbox is systematically used, evaluated and improved in a larger number of projects by the end of the research period.