Abstract
Housing policy is a marginal area of social policy, and it differs widely from country to country. In the early staes of social policy, housing for workers was regarded as part of the factory facilities. However, for reasons of public health, the state began to intervene in housing. Subsequently, rent control, security of tenure, construction of council housing, promotion of owner-occupiers, and rent subsidies were implemented. The housing policy of post-war Japan was based on the so-called "three pillars". However, since the Basic Housing Act of 2006, Japan's housing policy has changed greatly.