Yes, there’s technology to 3D print homes. A computer-controlled robotic arm equipped with a hose and nozzle moves back and forth, oozing lines of concrete, one on top of the other, as it builds up the wall of a home. It can go relatively quickly and form curved walls unlike concrete blocks.

As rents soar and housing grows increasingly scarce, millions of Americans are struggling to keep a roof over their head. In a bid to tackle this crisis, builders are using innovative ways to rapidly increase housing supply.