Among some theories about its location, the most common one suggests that it would have been placed in the compartment in the denso-yashiki (a residence for the imperial envoy) after residences of Sakai Uta no kami (the Sakai clan, Director of Music) and Ukyo no suke (Assistant Master of the Western Capital Offices), where the trials had been held were burnt down by the Great Fire of Meireki (according to Ryosuke ISHII, Koji FUKUHIRO and others).
ただその場所については諸説があり、もっとも一般的な説は、明暦の大火によって、それまで評定の行われた酒井雅楽頭と安藤右京亮の屋敷が消失したため、以降伝奏屋敷を仕切って評定所を置いたというものである（石井良助・服藤弘司など）。