Collingwood Contractors $($CC$)$ designs and builds new model homes for individual customers. $CC$ has developed a reputation in the market for relatively upscale, unique designs with high$-$end finishings. CC has developed several formulas, which it uses to estimate costs and provide price quotes for prospective buyers. These include costs for materials, labor, and other resources. Although multiple configurations are possible for any house, CC uses three levels $($or tiers$)$ to represent increasing levels of luxury in terms of materials used. In addition, the customer can choose among three levels of increasingly sophisticated appliances and other house equipment. Finally, there is cost to bring utilities $($electricity$,$ water, and so on$)$ to the house if required. Of course, these estimates are dependent on the region of the country and whether the lot is located in a city or in a suburb or rural area. If the building site is in a city, a premium is added based on the building and equipment costs. The following are the cost estimates for one region in the Northwest:

$\backslash$table$[[$Design and administrative costs,$$39,000$