The aim of this contribution is to present a summary of the changes in property ownership that have occurred in a tourist area in the high mountains. Priority is given in the text to the analysis of data by taking advantage of a database recently made available on the knowledge market by the Notarial Office of France (Notariat de France). The geographer will find in it matters to reflect upon. First of all, a communal pattern that is to be explained by social qualitative variables (geographical origin of the individuals) emerges from the mapping of the total transactions. The socio-spatial fragmentation is the result of exchange systems for properties that reveal two competing residential processes. The article aims to demonstrate how a sel...