PROBLEM TO BE SOLVED : To provide a method and system for preparing a development plan for making it possible for anyone to easily understand the development plan of a real estate in developing a real estate and a printed matter for proposing a development plan.SOLUTION : This real estate development planning method includes specifying a real estate property to be developed, and making an investigation including history items about the property, and preparing the development plan of the real estate property based on the investigation result, and selecting the purchase candidate of the real estate to be developed.COPYRIGHT : (C)2007, JPO&INPIT