Kanba and Ocha-ya were official buildings peculiar to Mouri-Han during Edo-Era. Kanba was feudal office and also used as a lodging by feudal lord. Ocha-ya was lodging used by feudal lord. Through the examination of historical materials, following results are ascertained; (1) Plan of Kanba is classified into 3 classes; divided, connected and self-contained type. (2) Kanba was ordinarily adjoined to Ocha-ya or included in Ocha-ya site.
