In addition, the chronology of excavated earthware suggested that the temple's buildings were constructed from the final years of the Emperor Jito's reign and the early years of Emperor Monmu (the very end of the 7th century).
さらに出土した土器の編年から、この伽藍の建立は持統天皇の末年から文武天皇の初年頃（7世紀最末期）であったことが推定された。