In France, the sustainable urban planning recommends the control of urban sprawl by the densification of dwellings and the protection of natural and farmed areas. The implementation of this policy leads to the modification of the managing of constructions in agricultural areas. It reduces the possibilities of building farm buildings and farmers' dwellings. At the same time, the agricultural profession insists upon the need of new buildings used for agricultural activities that maintain and valorize these spaces. In the Hérault, innovative solutions of grouping buildings together called "hameaux agricoles" are developed. These territorial innovations are developed in periurban areas characterised by problematic social relations: a week social link, land use and neighbourhood conflicts, etc. These innovative socio-spatial solutions modify local social relations, producing phenomena of solidarity/exclusion between farmers, of modification/reduction of social relations between farmers and inhabitants, development of "between ourselves" behaviour, and unexpected problems of social inequity. These phenomena question the livability of these socio-spatial models. More widely they question the spatial integration of farms in the French sustainable town and the functions assigned to agriculture.