Sure, it's 6700 square feet, but the architect, Jeff Berkus says that the house has a plan that "graciously accommodates multiple generations." Given the downstairs master suite, the second upstairs master suite, the "carriage suite", the house has eight sleeping areas that can accommodate twelve, and that's only 580 square feet per person.
The point of the New American Home is to demonstrate "best practices"
...concepts, materials, designs and construction techniques that can be replicated – in whole or in part – in housing built any place and in any price range....Its mission is to show that housing performance can be incorporated into the most simple or most complex homes, and that it’s equally as important as aesthetics.
Wouldn't it be nice if Best Practices included appropriate scale, walkable location, lower embodied energy and a ban on beige.