The primary purpose of the study is to conduct a qualitative research for the community building case in Achimura Japan and suggest some implications what elements are engaged in the success of the citizen autonomy for community capacity building. In other to achieve the purpose this study applies a research framework consisted of three aspects; how citizen participations are networked and organized, how the partnership between citizen groups and local public sectors is developed, and how the capacity of the citizen community is improved for the sustainable development. For the analysis this study conducts interviews with the previous and contemporary mayors, local council members, and city officials in Achimura Japan. Finally, this study suggests four implications for the success of the community building movement in terms of; 1) building and facilitating civil organizations, 2) reforming the consciousness of citizen autonomy for both public and private sectors, 3) sharing information with community residents and facilitating their participations, and 4) strengthening local capacity through lifelong learning.