Theories that 'the foundation stones that are currently visible are those when it was built', and 'it was never rebuilt after it was burned down in FUJIWARA no Sumitomo's War in 941' concerning the government district were mainstream before excavation and research.
政庁地区については、発掘調査以前には「現在見える礎石が創建時のもの」、「941年（天慶4）の藤原純友の乱で焼亡した後は再建されなかった」、という考えが主流であった。