In 1609 when Tsunaie was acting as grand magistrate for the construction of Kochi-jo Castle in Tosa Province, the Edo bakufu (Japanese feudal government headed by a shogun) began with the construction of Shinoyama-jo Castle in Tanba Province with an aim to demonstrate their power to the western part of Japan and use it as the residing castle of Yasushige MATSUDAIRA (believed to be Ieyasu TOKUGAWA's illegitimate child); Tsunaie left for Tanba Province to assist the construction of the stonewalls headed 2,000 soldiers.
慶長14年（1609年）、江戸幕府が西国ににらみを効かせるため、松平康重（徳川家康の落胤説がある）の居城として丹波国篠山城の築城をする際、綱家は土佐国高知城築城の総奉行を務めていた途上であったが、兵二千を引き連れて石垣普請に赴く。