After the war, Wohlstetter worked briefly in business in New York. He moved back to Washington, D.C. to serve as the Director of Programs for the National Housing Agency (USHA) in 1946 and 1947, the only time in his career he was a federal employee. At the USHA Wohlstetter worked with Paul Weidlinger, an engineer who had worked during the war for an aircraft company owned by Albert's brother, Charles, designing modular buildings such as airplane hangars that could be assembled quickly. At the USHA Wohlstetter and Weidlinger worked on applying such principles to domestic residential buildings.