After a parental separation children most often ‘commute’ between their parents’ homes. They have to relate to more than one family location and position these in relation to one another, as well as integrate existing differences and contradictions between these into their everyday lives. Research on children in post-separation families rarely reflects on the specific spatial dimensions of these living arrangements, seldom takes the complex social constitution of children’s familial worlds into account, and widely denies the social agency of the children. Referring to the sociological concept of the conduct of everyday life and the concept of socio-spatial appropriation, and based on theme-centred interviews with children and their parents, this article focuses on how children, who live multi-locally, utilise and appropriate their multiple familial worlds on the level of action praxis. Four patterns of multi-local spatial appropriation and spatial constructions as well as various aspects which play a role in this are presented.