Abstract : Contrarily to the pioneer and militant ecological communities (in the 70s and 90s), and also to the first north-European eco-neighbourhoods run by local authorities during the huge press events in the middle of the 90’s, French eco-neighbourhoods come under progressive integration of the durable city’ principles within the modes of production for the ordinary urban space (years 2000). On this account, they consist in fabricating within an emancipated frame, activism and experimentation of new facilities (parks, road works, etc.) in compliancy with principles of durability. This attempt to generalise innovative techniques within the French urban fabrication is accompanied by a myriad of educative plans of action instilled to workers concerned by the project, and future inhabitants of the quarter. These tools assist in instilling new savoir-faire and savoir-vivre necessary for the implementation and functioning of ecological techniques to the different targeted publics. Thus, social usages of workers and inhabitants matter to those who fabricate eco-neighbourhoods. This matter underscores the hiatus between the imaginative figure of the user expected by the fabrication and reality of social practices, which usages regulate. It is indicative of the socially subversive character in the production of ecological and technological innovations, and at the same time the existence of new expectations on social practices.