Hey, mom is moving into the granny flat so that the house construction can even be managed. Everything went wrong, but it can still be fixed at a normal level next week. Why KfW40 and single-family house + granny flat? Because it is heavily subsidized (and must be paid for expensively), not because you want it.
No, because more and more municipalities think they have to "set climate policy signals" and have fixed the required KfW standard in the land purchase contract.
In some places even KfW 40+ is already set, you can’t get out of it either. That is now standard practice; you can’t always choose, as if to "fix it at a normal level." People are forced to wait and see what comes next, and depending on what the requirements and subsidies look like, the project is dead and the prior investments of prospective builders are lost.
What happened on Monday, by the way, also has direct effects on those looking for a used property. Because whether, for example, the classic older couple who were thinking about building a bungalow again or buying an age-appropriate KfW new-build apartment with an elevator, etc., and selling their renovation-needy old building to a young family, will still be able to carry out their plans now is rather questionable. The elderly stay in the house, do no more work on it, and the family keeps searching in vain amid rising prices. In the end, everything is connected.