In 2019 we organized a conference casting light on the housing crisis and especially on the historical and contemporary organization of tenants to contest housing inequalities. By placing housing struggles and tenants’ organization at the centre of the debate we aimed at exposing and politicizing current capitalist development and, hopefully, at proposing a different view of how housing can be organized and imagined by discussing how resistance can be used, with what effects and how it can be connected to other struggles. This special issue is a result of this conference dealing with tenants’ organization in different contexts examining how tenants organize(d), why and what could be learned from it. In this introducing text we give an overview of this field of research by asking why tenants’ mobilizations are important to study, what is still under-studied in the field and which perspectives are important to raise in future research.