In October 1938, Arlington County approved the rezoning of , which allowed Mace Properties to construct large multi-family apartment buildings. In April 1939, Mace Properties announced that it had received FHA approval for low-cost multi-family rental housing. The first of these constructed was a 152 unit garden-style apartment building which cost Mace a total cost of $600,000 to build. In 1940, the FHA-backed Westover Hills project was announced. Westover Hills was hailed as the "most ambitious building program in Mace Properties' history." The dwellings, including single-family houses, twin houses, and garden apartments, were designed by Thelander and Washington, D.C. architect Harry E. Ormston.