Working hard at Choju-in Temple as the base in Edo and at Ryusho-in as the base branch temple founded by himself on the precincts of Todai-ji Temple, Kokei completed renovation of the Great Buddha's head in 1690 and Hachiman-gu Shrine (Tamukeyama Hachiman-gu Shrine) of Todai-ji Temple in 1691.
江戸では長寿院を、東大寺では自ら創建した子院の竜松院を拠点とし、元禄3年に大仏の頭を、元禄4年には東大寺八幡宮（手向山八幡宮）の修造がなった。