New York-based Extell Development Company, a full-service national real estate developer of residential, commercial, and hospitality properties, and Hilton, a leading global hospitality company, today announced the signing of Waldorf Astoria Deer Valley Resort and Residences. Expected to debut in 2028, the ski-in, ski-out resort will be located within the premier Deer Valley East Village, the first major public alpine ski resort to be developed in North America in over 40 years.