Even though the balcony in apartment is considered as a necessary space rather than a supplementary one nowadays, we still have many problems in balcony. The utilization of balcony space in our daily lives are as follows: Laundry, Storage, Indoor gardening, Exercise, Hobby activities etc. Despite of these various functions of balcony, balconies were designed without taking them into consideration. Therefore balcony spaces are not functional and the lines of flow get more complicated. Until now, the studies of balcony were simply done on the utilizing pattern and the satisfaction degree of residents, not on connections between balcony location and utilizing pattern. Thus, the purpose of this study is to provide improvement guidelines for the utilization of the balcony space in apartment by examining the present conditions and multiple needs.