This study is intended to elucidate the situation with the early stage of the Osaka Kurayashiki of the Saga Feudal Clan, changes in the premises, the architectural configuration and functions. The specific situation with the Osaka Kurayashiki can be presumed from the Tamatsukuri yashiki built in 1597. This yashiki is confirmed to have existed by November 6, 1600, but its subsequent existence is unknown. In 1605, the existence of the Temma yashiki was found. This yashiki had the feudal lord's residence called "onyakata" and a rice granary. It provided the functions of the upper and lower yashiki. The onyakata in the Genroku era consisted of various spaces for reception of customers, living facilities, services, a public office, and other purposes. As it was extended or rebuilt several times, those spaces were reorganized and improved. At the onyakata in the Kyoho era, the apace for the reception of customers was established and the independence of the space for living facilities was achieved. For this Purpose, "mura (hamlet)" and "akichi (opening)" were laid out to identify the function of each space.