This study clarifies the plan intentions of housing complexes developed in Japan in the early post-war period by focusing on the landform and choice of housing types. The subject is the Ozasa-danchi in Fukuoka City, which was developed in the 1950s in a hilly area. Because Ozasa-danchi was constructed under a social context in which the safety and economy of the land development technology were still a problem, the residential buildings were arranged without any large-scale development work. In this paper, we consider the relationship between the landform and the housing types in detail from the perspective of architectural planning.