There is no 'supra-theory', which might synthesise potential theoretical approaches for the study of multi-local living. Three selected theoretical perspectives are discussed: according to rational choice theory (RCT), multiple localisations represent just one of a number of choices, selected on the basis of individual preferences and given restrictions. Sociology of everyday life (SEL) addresses the reproduction of social life by focusing on practices of actors within the various social frameworks of multi-local everyday life. Actor-network theory (ANT) provides a 'toolkit' to 'de-scribe' the hybrid enactment of multi-local households. Materiality, processes, and multiplicity are emphasised. Each perspective reflects partial realities of the multiplicity of multi-local living. It is argued that the modelling of residential multi-locality pursued by the three approaches is highly productive if their results are compared with one another and interpreted as versions of reality differently shaped, which are partly congruent, partly incongruent due to incommensurable ontological and theoretical positions.Even though multi-local living is not a new phenomenon in most European countries, the multiplicity of practices of this organisation of life has gained a new dimension. Embedded in postmodern societies, multi-locality is mostly induced by processes such as individualisation, flexibilisation, acceleration, and mobilisation. Residential multi-locality may be explored against the background of diverse theory and by employing a variety of methods (see Weichhart 2015). In this contribution we aim to scrutinise the fruitfulness of three approaches: rational choice theory (RCT), sociology of everyday life (SEL), and actor-network theory (ANT) in order to gain greater insight into various aspects of the phenomenon of multi-local living. This selection, being one of many, should underpin current projects and narrow down specific research questions.These approaches have in common that they conceive multi-local living as a practice and a process. That is why they investigate how the practices evolve, how they can be maintained over longer periods, and how they are modified over time. The actors of multi-local living