The purpose of this study is to analyze the contents and characteristics of the initial process of supporting independent housing of the 『B project』 of the A daytime rehabilitation facility. The research was conducted as a generic qualitative research method, and the research data were used for in-depth interviews. According to the analysis, the most important feature of 『B project』 was that it accepted the various variables held by individual participants as constants of the support process. Individual situations and preferences of individuals identified as variables in existing housing support projects were areas that the person in charge must identify while carrying out the project. There were two main processes in which each participant has a different situation and preference was embodied in the initial support process of 『B project』. First, because there is a time in the participants lives that has been socially stopped due to symptoms or hospitalization, it is necessary to enter the stage of preparation for independent housing, namely, preparation for ‘independent housing . Second, it was necessary for participants to recognize the overall process of finding a home as a “self” problem. The staff interpreted the terms/content so that the information was more easily understood on the part of the participants, and the social worker presented a viable alternative based on the participant selection. Finally, the factors that prevent active participation in the project were analyzed through the cases in which participation in the project was not made after the initial interview with the 『B project』. Based on the contents, the practical implications for the systematic support process for the mentally disabled were presented.