Building design is developed into complexities, especially because of the emergence needs on applying a concept of sustainability. Aesthetic and engineering systems are no longer as main consideration in a design production process. Collaboration is needed to facilitate the integration of multiple knowledge and participants in a design process. In the process, multiple experts are required for achieving the best design. This paper purposes to discover issues and solutions as the important factors of collaborative design. Literature study is applied to determine the factors which are physical, technical, and social factors. They are found as three main aspects to be considered in supporting successful collaborative design. It is also found that recently, research in this area is directing for developing social factors as main issue. Factor analysis is also used as methodology to identify and analyze the similarities and interdependencies between factors. Analysis of data which is gained from designers and experts in Indonesia discovers that the three factors are reduced into two factors. The model of successful collaborative design is developed based on two findings in this research, that is not only conceptually but also empirically.