The goal of this paper is a better understanding of the use of neolithic longhouses by phosphorus cartographies, as well as the evolution of this use. A special accent is put on most recent results that include a number of Late Neolithic houses. The cartographies have been based on systematic phosphorus tests and some more focalized analyses of total phosphate. Certain tendencies are appearing in terms of house organisation and use, even if all the studies and analyses are not yet finalized. Some fundamental aspects  of methodology and taphonomy are also the result of these first attempts and permit to orient future studies in the concerned regions.