PROBLEM TO BE SOLVED : To enable even an unskilled person to accurately estimate a profit of a rental real estate.SOLUTION : A distribution analysis function (30) creates rent distribution data, vacancy rate distribution data, and turnover rate distribution data indicating a turnover rate of a lease contract, from rental real estate recruitment data (20) in a wide area including a location of evaluation object property and for a predetermined period traced back to the past. A function (36) of calculating a rent and a vacancy rate extracts data equivalent to property information and access information of the evaluation object property from the rent distribution data and the vacancy rate distribution data to calculate a rent and a vacancy rate of the evaluation object property. An operation income calculation function (38) calculates an operation income according to the calculated rent and vacancy rate of the evaluation object property. An operation payment calculation function (40) extracts data equivalent to the property information from the turnover rate distribution data to calculate an operation payment for the evaluation object property. A profit calculation function (44) calculates a profit of the evaluation object property from the operation income, the operation payment and a yield.COPYRIGHT : (C)2016, JPO&INPIT