The main scope of this study is to define such system of space composition factor to diversify the interior space of the apartment housing. Staring from the space analysis, identification of the design factors, characters of the anthropometry for the dwelling behavior, and analyzed dimensions of the interior furniture from the market data have uniformly integrated to engage with such system for innovation and diversification of the space design method. The elements of the composition factors are as follows: 1. Structural elements - $circled1$Bearing wall $circled2$Ceiling $circled3$Floor $circled4$Structural column 2. furniture elements - $circled1$Fixed furniture $circled2$Movable furniture $circled3$Non-bearing wall $circled4$F1exible wall $circled5$Void & Solid 3. Finished material elements - $circled1$Structural material $circled2$Doub1e shell $circled3$Color & Tone $circled4$Lighting system For the design system selected space in restricted in 3way directional axis X,Y,Z to form its volume and direction of the space composition factors. X-axis is stands for horizontal length of the factor, Y-axis is for the space depth, and lastly, Z-axis is for the hieghts of the space based on anthropometris.