The present invention relates to a real-estate information provider system capable of providing useful real estate information by providing not only information about real estate for sale through a user mobile, but also information about expenses necessary for a real estate transaction including a dealing cost of selected real estate, incidental expenses including brokerage and registration expenses, move expenses, and cleaning expenses and information about related service providers and to an operating method thereof. To achieve this, the present invention provides the real-estate information provider system including : a real-estate management server; at least one real-estate-to-sell management server connected to the real-estate management server and providing the information about the real estate for sale; at least one move service provider server providing the information about the move expenses; at least one cleaning service provider server providing the information about the cleaning expenses; and the user mobile receiving the information about the information about the real estate for sale by being connected to the real-estate management server, providing information about a dwelling place of a user for the real-estate management server, and receiving information necessary for dealing the real estate and information for a move from the real-estate management server.(100) Mobile(200) Real-estate management server(202) Mobile communication unit(204) Cost calculating unit(206) Central processing unit(207) Path search unit(208) Server network communication unit(210) Map DB(212) sale real-estate information DB(214) Move expense information DB(216) Cleaning expense information DB(218) External server member information DB(300) Sale real-estate management server(400) Move service provider server(500) Cleaning service provider serverCOPYRIGHT KIPO 2017