Where on earth did you get that from? Before throwing out such a big statement, you should rather read more carefully.
: Basically, I partly see it the same way as you. There is a tendency here to always assume the worst immediately.
Around us, there are also people who have bought/built houses, where no one knows how they want to finance it. Whether that will really work out, will probably only be seen in years to decades. And if a separation/divorce comes in between, in most cases it doesn't even matter, because one person alone is almost never able to easily manage such amounts off the cuff.
In my opinion, the total amount is simply a bit too high for you, but since you have already signed the contract, you must surely also have an assessment from the bank about the maximum bearable monthly burden?
We signed the contract for the house for 202k and have just received a detailed breakdown of which costs will arise at what amount. These are the remaining 140k for the plot, incidental construction costs, earthworks. But things like construction power, connections, etc. are already included.
For the Sparkasse, that was acceptable. We would end up with a monthly rate of €1200 if we don't enlarge the house, and we probably won't do that now. That probably included a bit of wishful thinking on my part.