House-building can be an irritatingly slow process. In the US it takes six months on average to construct a home. But now a robot can assemble the basic frame of a house -- foundations, floor, walls and roof -- in a single day.
The San Francisco start-up behind the robot, Apis Cor, says that it is the first company to develop a mobile 3D printer able to print entire buildings.
Here's their first home going up on a site in Russia.
At 400 sq ft (38m²) the house is cosy but proves the point that fast turnaround home-building is now possible.
The cost of construction is about $10,000. And the buildings can be any shape, a potential boon for architects.