Building homes using 3D printing technology is still a new idea, but one day it could well become one of the top construction solutions. Especially if the technology keeps developing at such a fast pace. The most recent successfully completed 3D printing project is a small concrete castle created by US-based Andrey Rudenko. He built the intricate structure in his backyard by using a large 3D printer that he made himself. His next project is printing a whole house.