PROBLEM TO BE SOLVED : To form a market wherein cashable objects (real estate, movable property, service, intangible property right, etc.), which are unused because of a low demand, etc., are efficiently used.SOLUTION : This method consists of a stage A for raising and applying for information on real estate (object) of subleasing, a stage B for opening on the Internet a window for raising and applying for the information on the subleased real estate, a stage H for conferring the operation state of the subleasing of leased real estate and the commercialization of bonds, credit, etc. a stage I for raising the conferred object according to the operation state of the subleasing and financial articles, a stage J for opening a market for the subleased real estate and financial articles on the Internet, and a stage L for applying the rent of the real estate and selling and buying the financial articles on the market.