Auction properties have features of ordinary houses (e.g., land, house area, number of floors, house age, government assessed land value, and building purposes), and special features of auction houses (e.g., hand-over, times of auction and current situations of houses). Thus, this research explored factors affecting price of auction houses, which can serve as reference for auctioneers and bidders in practice. The research samples were the data of auction properties collected from Taichung during the period of2011-2011. The regression analysis was conducted for the four types of large buildings, including storefronts on 1F, apartments, mansions and villas to discuss impact of attribute variables on average unit price of auction houses. The empirical results showed: (1) times of auction and house age had negative impact on unit price of the auction houses; (2) hand-over and government assessed land value had positive impact on unit price of the auction houses.