Sadayasu successively held the posts of Gomonban (watchers of the various gates) of Edo-jo Castle, and in 1814, he was appointed as Oban-gashira (captain of the great guards) of Nijo-jo Castle.
江戸城御門番を歴任し、文化11年（1814年）に二条城の大番頭に任じられた。