Hello - can anyone tell me who builds prefabricated houses in Switzerland?

You may find this thread interesting for a discussion including system houses. . .
If build up a house, ?CHF/m2

and here . . .
http://www.hausinfo.ch/de/home/gebae...emhaeuser.html

You can also find some companies here:

http://www.home-expo.ch/29-accueil.h...f509b4ed8c6c6e

Swiss and German ones. And you can go and visit the houses on site too.