Reuse in construction is an essential tool for waste prevention due to the large quantities of waste generated in that sector. In many studies, reuse was examined solely under the angle of waste legislation. The present project takes the next logical step, analyzing further legal issues along the product life cycle and verifying their compliance with the objectives of waste prevention and circular economy. The aim of the project is to investigate the advantages and disadvantages of the existing legal situation in the sense of waste prevention and reuse in the sense of an actual analysis along the entire life cycle of construction products. Based on this, a stakeholder process with relevant representatives will be initiated in order to determine the requirements in the field of reuse. It is expected to have a positive effect on waste prevention in the construction sector. Hence, legal certainty is equally relevant for the contracting authority and the contractor for a broad economic implementation.