In addition to the four buildings from Ichi no soba (一之側) to Yon no soba (四之側), there were two buildings named Higashi nagatsubone and Ohashitabeya, and Joro Otoshiyori (high rank women servants who controls the servants in O-oku) and Otoshiyori were given Ichi no soba, other jochu of higher rank able to see the Shogun were given Ni no soba or San no soba, and lower rank jochu not able to see the Shogun were given Yon no soba in accordance with their rank.
一之側から四之側までの4棟に加え、東長局、御半下部屋があり、格式に応じて一之側が上臈御年寄や御年寄、二之側、三之側がその他のお目見え以上の女中、四之側がお目見え以下の女中たちに配分された。