The present invention relates to an augmented reality service providing method executed by a user terminal. According to an embodiment of the present invention, the augmented reality service providing method includes the steps of : (a) receiving real estate information and two-dimensional polygon data corresponding to the location information of the user terminal from a server; (b) generating three-dimensional polygon data based on the two-dimensional polygon data and building height information included in the real estate information; (c) overlapping a rendered image of the three-dimensional polygon data and a real-time image obtained from a camera of the user terminal to provide the overlapped images onto the screen of the user terminal; and (d) providing the detailed real estate information corresponding to the three-dimensional polygon data. The two-dimensional polygon data are related to the shape of the real estate areas while the three-dimensional polygon data are three-dimensional shapes of the real estate.(AA) Start(BB) End(S510) Step of receiving real estate information and two-dimensional polygon data corresponding to the location information of the user terminal from a server(S520) Step of generating three-dimensional polygon data based on the two-dimensional polygon data and building height information included in the real estate information(S530) Step of overlapping a rendered image of the three-dimensional polygon data and a real-time image obtained from a camera of the user terminal to provide the overlapped images onto the screen of the user terminal(S540) Step of providing the detailed real estate information corresponding to the three-dimensional polygon dataCOPYRIGHT KIPO 2018