Is a clay house is a real house? How sturdy is it?

Yes, absolutely. Even buildings that are several stories tall could be made of clay. They could have all the comforts of a common cement house. There are many examples, although of course none has been 3D printed. Additive manufacturing technology adds new possibilities to a material that has a long standing tradition. These include doing almost completely away with manual work, offering For example it almost does away with labor, ofers much shorter times and yet unexplored nmeans of architectural expression.