PROBLEM TO BE SOLVED : To provide a system and method for managing agency services for real estate rental management, capable of specifying a certain amount of money that does not depend on rent as the minimum amount of rent to be paid to a real estate owner by an agency service contractor for real estate rental management.SOLUTION : When information about building cost of a rental apartment is registered as part of management information stored in a database 46, a processing unit 45 of a real estate rental management agency service management server 4 computes the amount of money corresponding to a predetermined percentage of the building cost indicated by the information as the minimum guaranteed rent to be annually paid to a real estate owner and registers the same as part of the management information in the database 46.COPYRIGHT : (C)2015, JPO&INPIT