Construction report single-family house 1200 €/m²

I believe brick and KS are not a good masonry combination

Is there actually a reference for the title regarding the turnkey construction costs (I won't even mention the DIN), or is it all just fantasy and thus of little help to other builders?

How am I supposed to provide evidence for the construction costs? The offers for the relevant trades are available to me. Accordingly, the direction should already be correct. Everything will be totaled up in the end.

Is there actually a reference for the title regarding the turnkey construction costs

It is added up at the end.

That’s what I meant, "report" in the title is misleading insofar as it is hardly possible to report in advance.

And up to 80% of personal contribution from the wage portion of the construction costs should likewise not be required,... at 25% a bank may already have difficulties and reduce it to a maximum of 10%.

The title of the post remains constant. Accordingly, this thread formally corresponds to a report as soon as the construction is completed.

And up to 80% of own contribution from the wage portion of the construction costs,
is probably not feasible either,... at 25% a bank might already have difficulties and reduce it to max. 10%.

With proof of the skills of potential helpers through journeyman certificates or similar, this is no problem according to the bank. In our case (ING dibal) the amounts were recognized without any issues.