Also written 津波井仏所. A guild of Buddhist sculptors *busshi 仏師 active in Nara *nanto busshi 南都仏師 from the mid-14th to 16th century, named after their location in Kōfukuji Tsubaigō 興福寺椿井郷. It was believed to have been founded by *Kei-ha 慶派 sculptors who formed an independent workshop *bussho 仏所.
Among the best known tsubai bussho sculptors were Kankei 覚慶, Keishū 慶秀, Shunkei 舜慶, and Shunkei 春慶, who were especially renowned for their technical skill. The earliest surviving statue is Kisshōten-zō 吉祥天像 (1340) in Kōfukuji by Kankei. Keishū 慶秀 is recorded as having worked on restoration of the Jūichimen Kannon-zō 十一面観音像 in Kasuga Jingūji 春日神宮寺 (1368). Another work by this group is a Monju Bosatsu-zō 文殊菩薩像 (1378) Jōdoji 浄土寺 in Hiroshima Prefecture, bearing an ink signature 'Nanto Tsubai-saku' 南都津波居作.
In the 15th century, the workshops *takama bussho 高間仏所, nobori-ōji bussho 登大路仏所, and fujiyama bussho 富士山仏所 are thought to have emerged as offshoots of tsubai bussho, but all declined during the 16th century, when the *shukuin bussho 宿院仏所 became dominant. Tsubai bussho continued production on a reduced scale until the Edo period.