This paper shows the gap of customer's preferences between before and after in preview process of real estate, and proposes a preview customer recommendation system for salespersons. Most customers who aim to start restaurant business currently begin to look for alternative real estate by a search engine site in the Web, however, a considerable gap is observed in the preference between the results by a search engine site and the final choice of real estate by the customer. In order to improve the gap, salespersons put much time and effort in their contact with customers. This research investigates the factors that bring about the gap, and proposes the recommendation system which supports salespersons in their sales activities.
