there are Romanian crews, they can do it and work for cash without wage-related additional costs. And without sales tax.
Your post altogether sounds a lot like insider information from the FKS. So not KGB, but customs.
Less meat – says the hotdog eater.
Sausages are not meat. I’m only a second-generation non-butcher, you can believe me on that.
I probably have some of the blame myself, as I probably asked my question too imprecisely. But I have too little experience and perhaps expected too much.
I just wanted to find out independently which energetic aspects (standards, building materials, construction methods) are not only useful for the general contractors but also for me. The budget question is surely necessary in that context but should not trigger a fundamental discussion.
Oh. Yes, then you really phrased the question very ambiguously.
This question is now quite different, but just as difficult to answer in a "generally valid" way:
Take, for example, the question of heating technology, focusing only on energy carrier and method, leaving out underfloor heating or radiators. The ongoing costs for operation and maintenance are much higher than what the installation costs – but the builder only earns on the installation (he doesn’t get a bonus from the gas company for your consumption or anything like that). Even on this differing “basis of measurement,” the question of what is better for whom among you diverges.
Or with wall construction: I can’t tell you whether the builder has more margin per cubic meter of Styrodur than per cubic meter of Poroton or Ytong. That is probably rather marginal for him – what matters is getting the contract. If KfW funding makes it more likely that you can afford a slightly bigger house than without, he will take that into account for that reason. He has no stake in energy policy – his business is to arrange stones so that a house forms in between, which is worth money to you.
Building materials are only a means to an end for him to finish houses. The shell is actually only the carrier of the fittings, on which more is earned than on the walls. Accordingly, there is not much fuss made about that. He wants materials his people can process routinely – that is important for productivity. He also doesn’t want to recalculate for every project which building material-insulation combination achieves which U-value. Including one with claddings, hardly any builder has more than three wall constructions on the menu. With or without bay window, outside there are only pitchers.
I believe that with your ideas about the variety you would suffer from in making your choice, you are still very much in theory. Adjust that in practice based on concrete offers from Müller, Huber, and Schmitz.