This paper handles the process how the positions of Soh-daiku and shuuri-daiku were taken over from the carpenters belonging to the Imperial Court to those to the temples and clarifies the following historical fact: A social status of Soh-daiku and shuuri-daiku was already established for the period of Ko-an years (1278-87). In the 1330s both of the daikus were given the official letter of appointment and at the middle of the 15th century it was officially and cleary stipulated that they were qualified to participate to the constraction works on an equal footing
