In the early 2000s, the Versailles Plain’s Association was created to defend agriculture in the western part of Ile-de-France, because since the 1990s urbanization has multiplied, threatening peasants, agricultural land and amenities related to. It is a rare french example of farmers' initiative to resist to urbanization. This association brings together 3 different colleges elected officials, farmers and members of civil society. Its objectives are to raise awareness among local stakeholders about agricultural issues and facilitate the emergence of common projects. Basically, it functions as a facilitating body between the different types of actors involved in the plain. It is now recognized by most stakeholders in the plain and has the support of local and regional authorities. Since its creation, the association promote rural regeneration and fight agricultural decline: i) by helping installations of new entrants and food artisans, ii) creating common values and links between various local actors, iii) promoting political supports, iv) promoting local, subsistence, diversified agriculture and local food microcosm with diversified small business. The association did an inventory of agricultural heritage on the plain (landscape charter); promoted exchanges and dissemination of information, created connections between urban and agricultural institutions; created spaces for exchanges between farmers and between farmers and city dwellers. However, the association still faces challenges. The cohabitation between farmers and urban populations remains difficult (even more after the covid-19 pandemic) and it has not fully succeeded in bringing together conventional farmers and urban actors from outside the plain. This promising practice suggests the following recommendations: recruit a facilitator to federate actors from urban and rural areas around a common project; create a space for debate and exchange ; use agricultural projects to respond to the urban major issues.