By focusing on the example of Rome, this research advances the idea that mapping could be crucial to tackling the future urban strategies by understanding, interpreting and elaborating the urban social spatiality that the informal urbanism is producing. Indeed, this new informality, in contrast with the more familiar informal/illegal practice - known as abusivismo - is developing a different attitude on the re-appropriation of urban spaces and to the right to the city that can be seen as base for the future urban planning of post-capitalism cities - in this specific case, Rome.