 It was estimated by the firm that there are 20,000 Haver designed tract homes in Arizona, New Mexico and Colorado.Haver Home characteristics include low-sloped rooflines, clerestory windows, massive mantle-less chimney volumes, floor-to-ceiling walls of glass, brick or block construction, clinker bricks in the wainscoting, angled porch posts and brick patios.Homes are typically less than 1400 square feet and significantly less in the postwar era due to federal mandate in conservation of materials.