PROBLEM TO BE SOLVED : To provide a real estate information-providing method and a supporting system for providing the real estate information by which customers can obtain the information on real estates more easily.SOLUTION : In the method for providing customers with the information on the real estates, qualified persons B such as a first-ranked qualified architect 10, a lawyer 11, a registrant in the skill of real estate consultation 12, a planner for re-development 13, a real estate appraiser 14, a licensed tax accountant 15, a certified public accountant 16, a land and house investigator 17, a judicial scrivener 18 and a chief of real-estate business 19 stand ready to respond to consultations requested by customers A in a service center 100 for providing the information. The qualified persons B supply the customers A with the information on the real estates and consult with the customers by means of face-to- face meeting, telephone or electronic mail. In the service center 100, the information on the customers A is collectively managed and held in common among the qualified persons B.