Reurbanization is currently one of the processes most discussed in urban research. But, since the term is used very frequently, many different definitions exist and the identification of common characteristics tends to be very difficult. In this article, reurbanization is conceptualized in such a way that it can be used as a tool for analysis and can help answer the question of whether it is a new trend or a temporary phenomenon. First, the author discusses the deficits of existing approaches and definitions of reurbanization. To contrast these deficits, the article introduces the concept of reurbanization as an increase in the importance of urban structures and inherent research questions and gaps. The focus is on the potential of urban areas instead of the actual moving-in, a mental change instead of a change of activity. The article ends with a discussion of the challenges that come with this new approach in methodological terms, using the example of location preferences. English title: Reurbanization as a Scientific Concept – Arguing for a concept of reurbanization as an increase in the importance of urban structures