Xanatos Construction is a branch of Xanatos Enterprises.
Xanatos Construction probably played a large part in the disassembling and moving of Castle Wyvern as well as the construction of the Eyrie Building in the early 1990s. They were also developing property in Arizona in 1996.
Besides typical construction equiptment such as bulldozers and the like, Xanatos Construction also uses more advanced machinery such as construction exo-frames. ("Awakening: Part Two", "Cloud Fathers")