The appropriation of space is represented by an assemblage of practices which gives to a limited space the property of either a private or a commun place. This assemblage of practices allows the identification of the place to be made, and this place, in turn, allows the production of practices. The appropriation of space is always linked to a symbolism. Therefore the appropriaM tion of space implies to communicate : the social qualities of the place, the I or the WE in this communication space is a material, a background for its operational use. The appropria tion may be subordinated to the qualities which are proper to space itself, when the latter is built, planned, produced there is then a relation between appropriation and the way in which some groups plan space, whilst others have or have not got the possibility to appropriate space.