[Problem] owned by the owner for investment evaluation result of performance evaluation and related supply and office partition, dividing office system investment owned, owned investment management office partition system control method, and recording medium owned investment management system of an office partition. [Solution] a real estate office supplies in the business owner as sections, to purchase and sale profit, real estate prices is predicted in the future. Also, the property owner clearly grasp various conditions present in the investments into offices and, economic situation as it is when the transition based on the financial statements or the like, segments owned office supply business, business owner investment effect at the both side, risk analysis, further, object state, assuming a situation where economy, financial, sales tax on the basis of the simulation result list, this investment, risk analysis, business development of index. Figure 1 [drawing]