A Japanese law of 1972 supports bōsai shūdan iten, group relocation for disaster prevention. The state helps finance moving homes out of areas at risk of disaster to safer ground, as a group.
The program was used widely after the Great East Japan Earthquake of 2011. For the areas hit by that disaster, a table of the Ministry of Land, Infrastructure, Transport and Tourism for the end of March 2026 counts 12,512 relocations: 8,336 to private plots and 4,176 to disaster public housing.