In the "Nanboroku" (books of tea ceremony) there is a description that says; 'The room sized Yojohan (7.4 square meters) was designed by Juko, and the main room is set as; shiraharitsuke of Torinoko-gami (wall pasted Torinoko-gami paper), fushinashi tenjo (edgeless ceiling) of cedar boards, koita-fuki (flooring with small wooden board), hogyo-zukuri (roofing of squire, sexanglular and octagon) and toko of 1.8 m.'
『南坊録』に、「四畳半座敷は、珠光の作事なり。真座敷とて鳥の子紙の白張付け、杉板のふしなし天井、小板ふき、宝形造、一間床なり。」とある。