This tiny house design is called the "Titan". It was named after the largest moon of Saturn. Titan was discovered by Chrisiaan Huygens in 1655. The Titan is the only moon known to have a dense atmosphere, and the only object in space, other than Earth, where clear evidence of stable bodies of surface liquid have been found. This house is still in preliminary design, the video was created to practice using different software and to show the current design.
For more information about tiny house designs from RootCAD see the link below: