A company in China called Zhuoda Group has unveiled modular homes that they construct in segments. The modules are all made in a factory using 3D printing technology (not sure exactly to what degree), and then are assembled in a few hours on the construction site. The houses, as you can see are quite aesthetically pleasing and they provide for some amazing mechanical properties. Read and see more at: http://3dprint.com/82322/chinese-3d-modular-homes