The purpose of the research is to assess the operational status of the design order system introduced under the Act on Promotion of the Building Service Industry in 2014 to draw out the results and limitations of the design order system, and to prepare measures to improve the design order system, which is newly introduced, such as expanding the scope of the application of the mandatory design recruitment. The scope of the research is limited to the method of design public offering and the method for assessing project performance as specified in the "Act on Promotion of Building Service Industry," and the method of qualification or private contract applied to small businesses is excluded from the application. In addition, the scope of this research is excluded from the design and construction batch bidding methods applied to large-scale projects.