First of all, heartfelt thanks to all of you for your contributions, information, tips, and sympathy.
It is bad, but not completely disastrous. We now have to pay "only" 15.4% more for the house instead of the originally demanded 21.4%, but the price increase for next year is already "included." Our house will not be delivered this year anymore, and the price now applies until the house is handed over. We try to console ourselves with the fact that we were hit with the price increases from 2020, 2021, and 2022 all at once.
We canceled the selection appointment because we did not know whether we would have legally agreed to the 21.4% price increase, but we were contacted and invited to a conversation with the company owner. You can find the result in the second paragraph of this post. The selection appointment began late after the agreement and was not particularly pleasant, as we now have to make compromises everywhere to at least partially compensate for the price increase. For example, instead of the wallpapers, which would have cost at least 17,000 euros more (because the puttying work is also more elaborate), we decided on the old textured wallpaper. This can possibly be changed again at a later date. What we managed to save are the floor height increases on both floors, as well as the many windows and floor-to-ceiling doors, which will also be taller. The pane windows also survived. The front door is not what we wished for, but it can be replaced later as well. I can only give more details when we have the selection list with all the reductions and additional prices.
I am at least happy that the house will have a nice, warm, yellow color and red roof tiles. :) And I am also looking forward to the many windows and doors, which I think are beautiful. :)
My thanks also go to the moderator, from whom I received the very last warning today and who still allows me to remain here. Yesterday I was truly so desperate that I did not remember the forum rules and forgot to delete the links.