PROBLEM TO BE SOLVED : real estate for activating the task. SOLUTION : the estate operation support system 1, and the server 2, for financial institution terminal 16 and estate management company, for financial institution terminal 17 and the owner. The server 2, and estate information database 3, 4 and estate leaseholder amount database, a real estate leaseholder base 4 is the amount of money and creditworthiness, recording a loan repayment estate information database 3 guarantor amount is calculated and a difference calculating unit 5, which calculates a difference calculating section 5 guarantor result, loan repayment amount larger than the amount of real estate leaseholder, a guarantor, withdrawn from the account of the estate management company, ~~~ distributorship of payment, real estate management company financial institution terminal 16 through the Internet to 15 having a transfer request part 6. Selected drawing : fig. 1