Nowadays, public buildings for residents’ everyday life, such as daycare centers, kindergartens, community centers, libraries, sports centers, and health centers, are increasing. Public buildings not only function as spaces for providing public services but also serve as a core for the community, enhancing the quality of daily life and vitalizing the community. The ground floor and open space of public buildings must be easily accessible and conveniently used by anyone. The government is promoting various policies to improve the quality of public buildings. However, in South Korea, the importance of public buildings is recognized, but more discussion of its planning direction is needed. The purpose of this study is to diagnose the present conditions of the ground floor and open space of public buildings, to investigate the problems, and to derive the improvement direction.