There was a large pond which was to be called 'Ryuyaku-ike Pond' by the later generation on the south-side of the residence, by the side of which was an outbuilding called 'Izumi-dono,' which was connected to the main building.
この邸宅の南側には後世「龍躍池」と呼ばれる広大な池が存在し、池の上には「泉殿」と呼ばれる離れが建てられ、本邸と結ばれていた。