"Located in Russia, this 400-square-foot home (37 square meters) was built in just a day, at a cost of just over $10,000... The main components of the house, including the walls, partitions and building envelope were printed solely with a concrete mixture. Fixtures like windows and furnishings were later added on, and a shiny coat of paint added to the exterior of the house. The house consists of a hallway, bathroom, living room and kitchen."Note the equipment used in this process is portable. Details and interior photos here.