3D printed houses have matured from experimental projects, to prototypes, to affordable housing. A house built in Austin, Texas, is projected to cost $10,000 and 24 hours to build. As the technology develops the price is expected to drop to $4,000. At that price it becomes more feasible and economical to provide housing for the homeless, the poor, and people living in disaster zones. Instead of being a novelty, printed houses could become a new variant on starter homes, the first house for many people. The next step is to print a 100 house neighborhood in El Salvador. At the speed of the technology’s development and adoption, conventional construction will find a competitor within a few years. Printed houses probably won’t replace the majority of conventional houses because housing is one of the most conservative industries, but even taking 10% of the market will have a dramatic effect on the industry and millions of people’s housing situations.