A real estate development and a management system thereof are provided to transparently manage the procedure of each process using a development process management program. A user accesses a banzip.com management server(40), and joins a membership. The user registers a developing real estate database(53), and manages the development of the real estate. A development procedure information database(52) stores progress data for each process, and manages the progress data. The development procedure information database monitors the member' s access and approves the access of the member.