In America last year, Icon and developer 3Strands printed four concrete houses on East 17th Street, Austin, Texas—the first move-in ready 3D-printed homes for sale in the US. “We believe 3D printing is the toolkit of the builder of the future,” says Yashar. “Traditional means and methods of building wall enclosures involve multiple trades, which increases time to delivery, materials, and labor costs. The Icon wall system replaces construction sequences involving coordination of multiple trades, including brick or siding, vapor barriers, sheathing, framing, tapes, sealants, insulation (sometimes multiple types), and drywall with only three materials: lavacrete, insulation, and a small amount of steel for reinforcing.”