The topic is not really new. At the end of the 2000s,  some sociologists and urban planners had prefigured the emergence of a “city 2.0” referring to the emergence of collaborative practices on the Internet: blogs , Wikipedia and maps that made digital more prevalent in our cities. Even though collaborative planning is not necessarily linked to digital, the consultation process is now common for most urban projects. Thereforce, user-generated urbanism might be the future of cities. In France, the phenomenon has reached a new level with the birth of Wikibuilding. The building would be designed within a wiki process, all plans and experimentations being open source. Any citizen would be able to draw, to use, to improve or to test the building. Promoters or insurers would test the wikibuilding with residents, real estate agencies and 5% of the area would be reserved for a living Lab. Wikibuilding would be a place for experimentation and open to the architecture schools in order to design and include continuous Open Design updates. The Paris School of Architecture is already …