Earlier this week, additive construction company Alquist and Habitat for Humanity formally handed over the keys to the new owner of an otherwise ordinary-looking three-bedroom single-family home in Williamsburg, Virginia. Despite appearances, however, that building was recently completed as the first Habitat project on the East Coast to be constructed with the aid of a massive 3D printer. The 1,200-square abode at 129 Forest Heights Road in Williamsburg’s Ewell neighborhood is also being billed as…