However, it is difficult to say that the all the temple buildings in Yakushi-ji Temple at Heijo-kyo were newly established without including any of the old structures transferred from Asuka, because old style roof tiles similar to those found at the ruins of Moto-Yakushiji Temple have been excavated from the precincts of Yakushi-ji Temple at Heijo-kyo.
ただし、平城薬師寺の境内からは本薬師寺から出土するのと同様の古い様式の瓦も出土しており、平城薬師寺の伽藍が全て新築で、飛鳥からの移築は全くなかったとまでは言い切れない。