Although Sadanaga was not as eager to renovate Todai-ji Temple as Yukitaka was, he was an appropriate person to obtain support from the Imperial Court and the bakufu as its director.
定長は行隆のようには東大寺再興に熱心ではなかったものの、その役割上、朝廷や幕府への協力を取付けるのは適任だった。