Feasibility Single-family house - Cost statement / Financing realistic?

Build it first and then we can gladly talk again :) I don’t really believe in it. The paper that has numbers on it is patient

Is "included" in the total price of the general contractor - according to his documents it costs 65k, where he ultimately adds that on or deducts it elsewhere etc. is of course always very difficult and not always transparent. But in the end I don’t really care :D

You might not care about that. But you give the OP 65k as a guideline to influence his decision. Since you haven’t had anything built so far, you don’t even know what it will really cost in the end. Earthworks can get expensive very quickly. If a lifting system is needed, we are easily looking at six figures. The construction site location is also very relevant ;)

Is "included" in the total price of the general contractor -

The magic word is hourly rates. ;) they unexpectedly cost me 5000€ with the roofer even though it was supposed to be a "fixed price"

Maybe you don't care about that. But you give the OP 65k as a guideline to influence his decision. Since you haven't had anything built so far, you don't even know what it will really cost him in the end. ;)

With 65k for a utility basement of about 80m², you're totally on point – it's not the only offer we had either... Definitely a good guideline. It always depends on what is ultimately included, no question! But it is just a guideline – in the end, he has to ask his architect/GC or whoever himself.

That's why I build with a GC and sign my contract with the things I want. If afterwards I want to plaster myself in Q3, lay more expensive tiles, suddenly decide I want underfloor heating, or something similar, then I know what I have to pay.

If you choose the right GC and plan carefully, then this nonsense about “additional costs afterwards” doesn't apply. Anyone can tell me now: "Just start building first" --> Fact is: It won't be like that :D

But if I had decided on a prefab house à la "I won't name names now" – I definitely wouldn't be so sure about cost transparency :D

In the end, though, your statement is complete nonsense: "Just wait and see what happens" --> Then every basement would have to be more expensive than planned? So the OP wouldn't be able to calculate anyway :D

Fact is: It will not be like that :D

I was that naive at the beginning too :)

Ultimately, your statement is complete nonsense anyway: "Just wait and see what happens"

Where do I write that? :)

You can gladly continue via PM. I think we are drifting off-topic here.

I was also that naive at the beginning :) where do I write that? :)

"But since you haven't had anything built from it yet, you don't even know what it really costs in the end." - pretty much says the same thing. But it doesn't matter - ultimately this was only about a possible consideration to build a basement. The details have to be clarified by the original poster anyway.

says pretty much the same thing.

It does not, because you overlook what it was about and interpret something else into it.

We pay about 65k for our basement

And you only find that out at the end.