Allen Corporate Headquarters WetStone is a Division of Allen Corporation 10400 Eaton Place, Suite 450 Fairfax, VA 22030-2208 WetStone Corporate Headquarters McNeil Building 17 Main Street, Suite 313 Cortland, NY 13045 WetStone South Carolina Engineering Site Coastal Carolina University Foundation Center Building 2431 Highway 501 E Conway, SC 29526