Hello everyone,
thank you very much for the many opinions.
Maybe once again for better understanding:
I mentioned the real estate because it is part of the framework conditions. It is clear that, if at all, the bank only considers it as collateral and not as "future income".
However, they are important to me in my personal assessment of the situation because in case of emergency there is still some support. Without this safety net, I wouldn't do any financing anyway.
Basically, I consider the construction financing independently, i.e., can we afford it and does it make sense given our income/equity?
By the way: if we build, then only to this extent. We will not make big compromises. Because: if we cannot build according to our wishes, we will look for an apartment and eventually move into my parents' house. That is also not according to our ideas, but (to put it bluntly) costs nothing. Otherwise, that would be burning money.