PROBLEM TO BE SOLVED : To provide an electronic application data processing system, an electronic application data processing method, and a program for contributing to the efficiency of various procedures such as applications related to real estate with respect to an administrative government agency or the like.SOLUTION : An electronic application data processing system 1 includes : a real estate designation reception part ES for receiving the designation of real estate; and an application data generation part AP for generating application data related to the designated real estate received by the real estate designation reception part ES, therein the application data generation part AP has an existing information acquisition part RM for acquiring existing information related to the designated real estate. The application data generation part AP generates application data on the basis of the existing information related to the designated real estate and input information by an operator.