Uniqueness: McKinney has built a James Bond room, shark aquariums, double helix staircases, etc. His clients don’t want to see their marbles, woods, and other features in another home. (See Acqua Liana to view his work).
The house must tell a “story.” For example, the floors and doors may have been sourced from a 300-year-old country church in Spain, the house may have had celebrity occupants, or it was tied to an important historical event.
The house must be “germ free.” The wealthier the client, the more likely they are to be germaphobes.
Green features: including energy-saving appliances, renewable woods, water reclamation and cooling, etc.