PROBLEM TO BE SOLVED : To provide a real estimate management device and a real estimate management system for providing an upgrading measure of an estate.SOLUTION : This system has following steps : an evaluation information input by a building owner is received and stored in a building performance evaluation database 302 (step 120); and an evaluation information input by a building tenant is received and stored in an attitude survey result database 304 (step 122); and an overall evaluation is calculated by a hierarchical analytical method or the like based on the building performance evaluation and the attitude survey result and stored in a building performance overall evaluation database 308 (step 124); and a building upgrading measure database 316 is retrieved based on the overall evaluation and the upgrading measure is transmitted and presented to a personal computer 104 of the owner through the Internet 100 (step 242). Hereby, in this estimate management device, since an input device inputs at least either of a customer' s evaluation value and a manager' s evaluation value on the real estate and a presentation means presents the real estate upgrading measure based on at least either of the customer' s evaluation value and the manager' s evaluation value, the manager can acquire information on the upgrading measure of the real estate based on information including at least either of the customer' s evaluation value and the manager' s evaluation value.