It's not a home, exactly, but at least some components of a prototype home of the future were manufactured on a Z-Corp 3D printer for the "Home Delivery: Fabricating the Modern Dwelling" exhibit at the Museum of Modern Art in New York. According to DesignNews on wall:
has been fabricated from a collection of bulbous building blocks fabricated on a 3-D printer from Z Corp. According to Hina Jamelle, one of Contemporary's directors, the blocks are epoxy-bonded to form the self-standing wall.
They expect that in the future the printed components may become sufficiently rigid to perform as structural, rather than decorative functions.