<p> Encouraged by the "Work-Life Balance Charter" formulated in 2007, which recommended various ways of working and living, the promotion of side jobs in companies and the activities of people in their hobbies and leisure have become active.</p><p> As the work environment changes, people not only realize hobbies and side jobs, but also create encounters and relationships with others through rental spaces dealt on the website.</p><p> In this way, rental space, which has emerged in large numbers in urban areas and is being used for a variety of purposes, has the potential to become a place for new interaction.</p><p> In this paper, we conducted basic research on 1, 000 rental spaces in the Tokyo area (Tokyo, Kanagawa, Chiba, Saitama), and clarified the basic performance and regional characteristics of rental spaces.</p><p> In addition, by conducting interviews with owners of rental spaces where they engage in side-business or hobby activities, we were able to get close to the actual status of rental spaces management and usage, and clarified the social role of them.</p><p> These results are considered to be important and have implications for the utilization of urban building stock for diverse ways of working and self-realization.</p><p> </p><p> 1) Basic performance and regional characteristics of rental spaces</p><p> Existing uses of rental space are classified into four categories: residential, commercial, entertainment and rental only. The recommended uses on the website are classified into four categories: corporate, personal, interactive, and presentation.</p><p> Next, performance of RS as an existing building stock and performance of rental space for each recommended application were clarified. In addition, we were able to obtain 3 types of regional characteristics of rental space from the information of existing uses of them, and found 16 characteristic regions explained by them.</p><p> </p><p> 2) Reason for occurrence of rental spaces and devices for operation</p><p> As a result of interviews with rental space owner, we found that there were four reasons for the occurrence of rental spaces. Also, by starting rental spaces, we learned that these place has become a place to support and contribute, and a place where new encounters and relationships are created. Also, we found out that the owner carries out his own examination when renting a place.</p><p> </p><p> 3) Actual situation of use of rental spaces and values for users</p><p> As a result of analyzing the actual use of rental spaces obtained by interview survey to the owners, it was clarified that the users are seeking five values of place; "Space to be rented that meets the purpose needed in the short term", "Space for showing their hobby", "Space for challenge of new work transformed from their hobbies", "Space for realization of free self world view" and "Space for mental recovery".</p>