A method for defining the scale of an architectural model that is a building model integrated with a site model. The method includes selecting a standard sized modeling board or stock from which the site model is to be built. The method further comprises determining the length (x), width (y), and height (z) of the plat corresponding to the land to be modeled by the site model, as well as the x:y:z ratio of the plat. Dimensions for the site model are then determined. The site model dimensions fit within the dimensions of the standard sized stock and maintain the original x:y:z ratio of the plat. The scale of the architectural model is then determined by dividing the dimensions of the site model by the dimensions of the plat.