As most architectural model builders USA agree that scaling is one of the most important aspect of model making. Usually, architectural models vary from 1:10 to 1: 200 ration, the urban models, on the contrary, range from 1:500 to 1:2500 depending on the kind of it will be covering. Moving over to what kind of materials are to be used for this purpose, most architectural model making companies use a wide variety of material that goes from cork sheets to white foam boards, foam sheets, wood, and so forth.