Steel production stands out as one of the most energy-intensive industries globally. Shifting towards a more circular system could be achieved by component reuse. Unfortunately, there is lack of information on how to assess the reuse potential of diverse steel components. This research paper focuses on developing an assessment method for the reuse potential of thirteen common steel product groups. Components found in three case-study buildings on the TU Delft Campus are categorized into these product groups and assessed for their reuse potential. The research process includes: compiling an inventory of components, identifying factors impacting the reuse process and conducting a value assessment. A design for a new circular campus building was made with the suitable components. The goal of this design project was gaining more knowledge on how to implement reused steel components into a design, experience the complications involved, but also explore the possibilities it could offer.