Community as one of the tools of urban planning has been raised to overcome the problems of the urban system during the twentieth century and is taken into consideration from different viewpoints. Development at the local level and finding democratic solutions, dedicate an important part of urban planning to itself. Therefore, a deeper understanding of community development, and bridging the gap can understand the planners in m right decisions and prepare appropriate plans to lead urban communities. On the other hand, social NETWORKing is a critical issue for human societies, which can has a vital connection with the Community development system. The present study aims to investigate the RELATIONship between social NETWORKs with community development in the Fahadan community of Yazd city. The methodology of this research in terms of aim is application - development and in terms of the nature and method is descriptive – analytical. The used tool is a questionnaire that has been analyzed SPSS and Amos software’s. The results show that there is a direct RELATIONship between social NETWORKs and the community development, according to research findings, the impact of social NETWORKs on community development is 0.70 percent. The Standardized Beta coefficient in components of social participation by a factor of (b=0.172), NETWORK quality by a factor of (b=0.111), civic participation by a factor of (b=0.092), also has the largest share in explaining the development of community planning sequentially. Structural equation modeling results show that with the increase of social trust, community development components also increase.