This study clarifies the functional and spatial characteristics of "provisional use of plazas" by private operators in central Tokyo, as well as the characteristics of project management. We organized the functional and spatial components of permanent and temporary use through a literature review, and clarified the characteristics of project management through interviews with project proponents. The results revealed that, in anticipation of subsequent development projects, functions for local residents, low-cost installations, and sympathy with the project philosophy were prioritized in the decisions of project collaborators. In addition, administrative and operational characteristics were typified by the relationships among the project partners involved in the planning, management, and operation of the project.