Another of the companies mentioned, Facit, has a lot more videos and information about their build process:

https://www.facit-homes.com/building-process

Facit CEO is a friend of mine, really glad they are getting featured here and people appreciate their approach.

The "on site printing" robot looks very practical. A simple little wheeled robot with good navigation drives around on the concrete slab and draws lines and marks to show where things go.