It is especially bitter when you can only watch because there is still no solution for the KFW40 funding. Only the Ukraine crisis could now lower the yields of German federal bonds. But nobody wants to hope for that.
Well, that is still very, very low. Especially if the inflation remains. I would only talk about "bitter" from > 3%.
Sure, you can never compare, but 0.4% in one month! With the loans people take out nowadays, that quickly means 100€+ per month!!! + All the additional housing costs, such as water, electricity, and gas + about 100€ more per month. At 3% and above, that would no longer work, only the richest 10% could afford that..., especially with new builds. I think the prices for old buildings will slowly reach their maximum if interest rates rise a bit more.
So with us, everything will actually be a bit cheaper in 2022: water, wastewater, waste disposal, street cleaning - all down by a few percent. Property tax stays the same.