Double KFW 297 funding through two residential units?

Or add a small granny flat as a side structure measuring 6x6m. It doesn't bother at all and can be used as a hobby room, later for the child or the grandparents.

Can't someone just open a collective thread for that? - this is already the four thousand seven hundred and twelfth reheated running gag FAQ on the topic of Schrödinger secondary apartment only for the second subsidy ;-(

Or you could add a small granny flat as a side structure measuring 6x6m. It doesn’t bother at all and can be used as a hobby room, later for the child or the grandparents.

So this will be a 30 sqm apartment. With a separate entrance and bathroom, there is really enough space to serve as a "hobby room." It will be no more than one room. Especially the grandparents will be happy about such a spacious apartment. Or the hobby room that you can only get to if you leave your house and walk to the extension. In spring, autumn, and winter, in rain, wind, and snow, it’s no fun to go to the home cinema, visit your own gym, or play music. However, the construction costs for this part of the building will be higher than the KfW promotional loan. As you can see, such a funding solution is not necessarily the optimum, to put it mildly and not too negatively.

Or add a small granny flat as a side structure measuring 6x6m. It doesn’t bother at all and can serve as a hobby room, later for the child or the grandparents.

Well, the effect is supposed to be that we save interest during construction. That certainly doesn’t work with an additional structure. But I can already see that it would probably only make sense in the basement, and then I have to discuss it with the architect after the soil report is available.

What would the requirements be? Is there a legal definition of residential unit? Could an architect still design a decent single-family house from that?

And you find that acceptable? Double funding, but only one effective residential unit? I call that subsidy fraud.

Weren't the guidelines also recently changed to curb this subsidy capturing? Until now, it was enough that a second dwelling unit could in principle be created, but it did not have to be executed. I seem to recall that it must now be proven that it is also structurally a second dwelling unit and not only the lines reserved.