The physical design of apartment’s outdoor space plays an important role in improving Sense of Community by increasing interactions and accidental meetings among the residents. The purpose of this study is to propose the apartment open space planning factors which contribute to revitalize its community. The survey research has done with 354 residents who live in 4 types of apartments differentiate by the open space layouts. The results and conclusions are as follows. (1) The types of apartments are varied as the scattered, the near-to-scattered, the outside-clustered, and the center-clustered. (2) The resident’s attitude for the open space and each facility are affected by the types. (3) The residents’ use and satisfaction of the open space and each facility are also related to the types.