Are these costs still normal even in these times?

The table hardly makes any sense, especially because the ground floor and the upper floor are completely mixed up. Many items like bathrooms and electrical work and especially the architect count for both floors. What is included in the costs incurred so far?

So if I divide the €480,000 by the 180m², I get €2,666/m². Because of the basement, you might even be able to divide by even more m².

Architects who plan and supervise a house construction for 6k cannot survive long (at €60 hourly rate, that would be 100 hours, so about 2.5 weeks of work. Not much can come out of that)

The question is rather whether one uses the entire range of services. You can do a lot yourself if you want to. Especially when I renovate, I shouldn’t open my wallet for every little thing but be able to roll up my sleeves myself.

The question is rather whether you make use of the entire range of services. You can do a lot yourself quite well if you want to. Especially when I renovate, I shouldn’t open my wallet for every little thing but should be able to pitch in myself.

renovating a bit by yourself in the existing building and

The house will be demolished up to the ceiling of the ground floor and then two new floors with solid wood walls and ceilings will be built on top

is quite a difference...

Just a question completely independent of the prices: Why are you leaving the ground floor as is? To save money? Or for legal construction reasons? If not the latter, I would also tear it down and do it anew.

Why are you leaving the ground floor standing? To save money? Or for building regulation reasons?
If not the latter, I would also tear it down and rebuild it.

Because it is inhabited and presumably will remain inhabited during the construction phase:

The problem is only that we have already started and the parents-in-law living on the ground floor would otherwise have no heating for the winter (it has already been removed).

renovate a bit in-house from the inventory and

there is a certain difference after all...

And does the architect have to obtain and award the offer? You can’t do that yourself? I don’t care, it’s not my money anyway :)