Bohannon was active in the National Association of Home Builders (NAHB) and a frequent speaker at housing conferences. On 03/10/1944, he delivered a lecture entitled "Site Methods Versus Factory Production," in the session, "New Materials--Techniques and Costs," at the National Conference on Postwar Housing, held in Chicago, IL, 03/8-10/1944. (See David D. Bohannon, "New Materials--Techniques and Costs," Proceedings of the National Conference on Postwar Housing, [New York: National Committee on Housing, Incorporated, 1944], p. 160-164.)