The building industry waste and transportation can be reduced by reclaiming building components. Building 22, Applied Physics on the Campus of TU Delft can be transformed into student housing and public functions by using reclaimed building components of the existing building, in order to achieve the environmental ambitions of the TU Delft and to strengthen the relationship with the city regarding. This research assesses the potential of various interior building components by means of R-strategies for the future functional needs. By distributing the building components amongst the five R-strategies, a basis for a vision of the future of this building can be derived. This case could be an example for reducing costs and be a road towards a more sustainable building industry.