Nowadays when general publics plan to buy their own houses, due to the lack of experiences and knowledge, even incorrect or inefficiency message sources, they can just get very limited information about the qualities of houses, the unit price of each square foot, total price of square feet, and the so called reasonable bargain prices from constructors or agents. However, most consumers do have the right to totally dominate such commercial activities. Since they pay more attention on listening,choosing, and doing the comparisons among all the candidates of targets, they really can be more aggressive in the negotiation process. This research stands in the consumers’ point of view and provides them more reasonable prices about the target buildings. With these reasonable prices, general publics can take more advantages in the bargaining process with constructors or agents.