Turnkey Construction

So we also build turnkey..

ZERO PROBLEMS, if you deal with it beforehand.
It doesn't cost a cent more than was said at the beginning!

I have ONE contact person if something in the house is not right.

The statement of the OP is not comprehensible to me.

Turnkey with our house company... AGAIN AND AGAIN!

Hmm... I don't quite understand the problem with HauslBaus after all. Building a house is like everywhere else in life. The customer gets what they order. The house building company earns what it gets. Better to be informed, planned, and calculated beforehand one time too many than to make big eyes afterwards about the oh-so-expensive prices. And the thing with the heating ..... great ..... I definitely have to remember that.