The economical small house provided a cheap alternative to the ranch house. Frequently built from mail-order plans, buyers could pick from plan books and magazines. Plan companies would provide specified inexpensive factory-made plywood or prefab wood siding and stucco. One-story plans were common, but there was also a split-level or “hi-ranch design”. Common materials included vinyl tile floors, interior walls of plasterboard, and a lower level left unfinished until the space was needed.