Average-quality buildings constitute the largest group of buildings constructed, approximately fifty percent of all buildings. These are generally buildings designed for maximum economic potential without some of the pride of ownership or prestige amenities of higher-quality construction. They are of good standard code construction with simple ornamentation and finishes.
The basic costs, which are listed, are national averages and may not represent the local average quality. In dwellings, the typical average quality dwelling changes through the years, with today’s dwelling generally having more electric outlets and services and more plumbing fixtures. At the same time, the quality of exterior and interior finishes has been lowered to compensate for the total cost of the house.
An average, conventional frame dwelling should have joists and wall framing that conform to all federal, state, and local building codes. Wall construction varies in different localities and modular homes may deviate in many respects. The Average class D dwelling of the warmer portions of the United States may not have extensive sheathing or insulation between the studs and the exterior wall finish, while this is considered substandard in a colder climate. However, the warmer climate residence will generally have more fenestration.
A Fair quality is the mid-range of the starter house.