German construction supplier Peri is building a 3D-printed house in Beckum, western Germany. /VCG

A man watches the head of the 3D printer which applies the next layer of concrete to the walls at the construction site. /VCG

The company said it took just two workers to print out the ground floor within 25 hours. /VCG

According to North Rhine-Westphalia's state government, the house is Germany's first residential building constructed with 3D printing or additive manufacturing technique. /VCG