New construction project single-family house in the Bergisches Städtedreieck

Those were just examples. I am sure the OP wants a normal, inexpensive staircase.
Still, the question is, how much budget have you planned for the 200m2 house, ?

Court jesters are sometimes needed elsewhere, but not here in the forum, to make snippy comments.
And the princely staircase is included in the budget...

I have already revised my draft. It will soon be presented to a specialist who will then make the whole thing buildable. And thanks to everyone who helped me here with constructive suggestions. And to the others... there are more meaningful activities for these people than posting pointless things here.

... I'm really curious to see what will remain of the plan. However, I bet that the staircase and the access to the storage room will look completely different on a professional's plan.

And regarding constructive suggestions or what you consider pointless ... with the understanding of the plan you showed up here with, you should take all objections to the plan seriously.

Thank you for the warning. I am always open to good suggestions. Just not for stupid comments, which there were here. And if I were an expert, I wouldn’t be asking for help here.

Thank you for the warning. I am always open to good suggestions. Just not for stupid comments, which there were here. And if I were an expert, I wouldn’t be asking for help here.

It’s all good. Don’t get upset about a funny post. The important thing is just to keep in mind that you should first plan with a 4 m staircase without a superstructure. Such details down to the last 10 cm come in at the very end, when everything else fits.