When the Edo bakufu was established in 1603, the Tsuchimikado family was officially acknowledged as the main branch of Onmyodo with their service often being sought for judging chiso, for the construction and layout of facilities when Edo was developed and when Nikko Toshogu Shrine was built later on.
1603年（慶長8年）に江戸幕府が開かれると、土御門家は幕府から正式に陰陽道宗家として認められ、江戸圏開発にあたっての施設の建設・配置の地相を担当したほか、後の日光東照宮建立の際などにしばしば用いられている。