http://law.e-gov.go.jp/haishi/H06SE311.html 高齢者、身体障害者等が円滑に利用できる特定建築物の建築の促進に関する法律施行令] Schools, hospitals, theatres, arenas, community centre, exhibition halls, department stores, hotels, office, multidwelling units or senior homes with floor space less than 2000 meters square must spend reasonable effort to install and maintain tactile pavings inside the building, but not required.