The renovation project of an apartment building can be classified into four processes: ordering the project stage, planning stage, examination and judgment stage, design stage and construction stage. However, in the domestic renovation business, the project performance process has yet to be madε systematic by stage. Of the stages involved in renovation, the design stage is the one that involves very complex roles and business processes of those involved in the project, including the project manager, architect，resident and engineer. In particular, in the design stage, the insufficiency in the ability to utilize the input information by project participants and improper decision making cause various problems in the subsequent construction and ultimately make it difficult to accomplish a renovation project that fully satisfies the residents. Therefore, the design of renovation is a very important stage to ensure a comprehensive understanding of the project performance process as well as the recognition of the design management technology. For this purpose, we aim to analyze the information utilization process with focus on the input information at each stage of the design process. The information utilization process of this study is analyzed through the processes of input information, technical tools and output to establish a decision-making method for each design stage. The aim was to implement the project performance process for the general design management.

The renovation project of an apartment building can be classified into four processes: ordering the project stage, planning stage, examination and judgment stage, design stage and construction stage. However, in the domestic renovation business, the project performance process has yet to be made systematic by stage. Of the stages involved in renovation, the design stage is the one that involves very complex roles and business processes of those involved in the project, including the project manager, architect，resident and engineer. In particular, in the design stage, the insufficiency in the ability to utilize the input information by project participants and improper decision making cause various problems in thε subsequent construction and ultimately make it difficult to accomplish a renovation project that fully satisfies the residents. Therefore, the design of renovation is a very important stage to ensure a comprehensive understanding of the project performance process as well as the recognition of the design management technology. For this purpose, we aim to provide design work process in integrated respects and the role and responsibilities of every participant in the project, subject to the renovation design stage.