Kokucho built in a square lot was usually equipped with three buildings in the north, east and west, which was called "Seiden," "Higashi-wakiden" (palace located on the east side) and "Nishi-wakiden" (palace located on the west side) in that order, as well as a main gate in the south, all of which surrounded a square courtyard.
方形の区画の中に中庭を囲んで正殿、東脇殿、西脇殿を冂字形に配置し、南に正門を持つ。