Since 2005 the Ile-de-France Region has witnessed an impressive series of Urban Interventions inspired by the Loi Borloo on Urban Regeneration. Thousands of residential units in obsolete buildings have been demolished and new Urban Centres, Urban Neighborhoods and Garden Cities have been built. The most famous examples are the 3 huge building bars at La Courneuve each one accommodating 4.000 inhabitants and demolished in les than 10 s. However, more interventions have been implemented at Maison Alfort, Neuilly sur Seine, Clamart, etc. This paper illustrates 3 Case-Studies: the new 80.000 inhabitants Garden City at Val d’Europe, the new Urban Centre and Garden City at Le Plessis Robinson, and the New Urban Centre for the Garden City at Yerres. These interventions can be regarded as the follow-up of 1970s process of construction of the first 5 Villes Nouvelles around Paris. All these 3 Case-Studies show an important presence of Social Housing integrated into the Mixed-Use Urban Structure for around 35%.