"This paper puts in question the of in the expression "appropriation of space". Is this appropriation not characterized by a reversibility allowing us to say that apace is as much appropriated as appropriating ? From this point of view, we broach the topic of the relationship between inhabited apace and the proces ses of identification in the human subject, out of which there follows, among other things, the necessity of considering the temporal dimension and the genetic aspect of spatial relation. Two clinical examples concerning "moving house" point to the existential character of this relation."