[Problem] to improve the usefulness of information providing method and device. [Solution] the method according to the present invention, the information providing device 200 by the information providing method comprising, a step into a plurality of clusters of past actual conclusion, based on the information received from the user terminal to the user, a plurality of clusters on the user to either step string, string is included in the delivery information relating to real estate contract conclusion-cluster classification, comprising the step of transmitting to the user terminal. Figure 1 [drawing]