Including the garage, it should be hardly less than €500,000 excluding additional construction costs and outdoor facilities. However, since this is already a "special" house that is not available off the shelf, probably only a direct comparison between different providers will help you. The information is not sufficient for a cost estimate.
Hello and welcome to the HBF.
That already sounds rather concrete for you (if the window manufacturer is even fixed).
Do you already have an offer from them?
I can't quite imagine the garage protruding into the house.
Otherwise, the prices are often discussed here in the forum: approx. 1800 euros per m² of living space, fireplace approx. 5k euros, normal double garage approx. 40k euros (in your case probably rather 60k euros), cellar depending on location between 50 and 100k euros, additional construction costs 40k euros, painting + floor coverings in EL 20k euros, outdoor facilities at least 10k euros...
Hello, I am new here and have a question: The 1800€ per m², what is included in that? Do the costs you mentioned afterward still come on top (additional costs, floor coverings, ...) or are they already included?
Are there certain recommended topics (apart from the 2 pinned ones)? It is hard to read everything. Your estimate of 1800 refers to medium equipment, right?