To provide a virtual construction method for a house which makes it possible to easily conduct planning while visually confirming the house by displaying the house in a constructed status on a screen, to provide a virtual construction system used for above method, and to provide a recording medium recorded with a data bases and programs for the realization of this system.

Data of a part is related to the part and stored in a part database 20 in advance. Data of a part selected with a terminal 100 is call up from the database 20, the data is used to display the part on a Web page, and the plurality of the displayed parts are combined on the Web page so as to virtually construct a house.