Bungalow for 4 people with attic expansion - Which floor plan?

to evolith. The plan will be this. The elderly live downstairs, when children visit they can stay upstairs overnight. Otherwise, upstairs is storage, ironing room, sulking corner after marital disputes, space for Olga from Minsk when the 24-hour caregiver is needed.

But she said that he wants to put the children's rooms in the attic. So 2 rooms that would definitely end up up there and not just as an emergency reserve. That means I have to have the attic fully developed (water, network, electricity, satellite, ...) and insulated. That means, with a bungalow, which is already not exactly cheap, additional costs that don’t necessarily have to be or will hit the budget hard (for us, an expandable attic (!) would have already been 15k more.
Then you might as well plan a single-family house where the parents have their residence downstairs and the children with guests/office and storage rooms are found upstairs.

In a bungalow, EVERYTHING is really found downstairs and upstairs is just the space for the clutter. I can accept the sulking corner up there. But everything else belongs downstairs, otherwise it’s not a bungalow.

So it’s not about quibbling over words, but about real cost considerations. A bungalow has a larger foundation slab, more bricks used downstairs, and a bigger roof. Plus the higher sewage fees (because of more roof area) or the larger infiltration system. That really hits the money badly if you plan anyway to turn it into a huge single-family house in 2 years.

I don't know if such bungalows are only built in Potsdam ))

Only there. The original model is located in a large park and is called sanssoucis

whereby the construction planned here will not remain "without concerns".

crazy
why won't he remain without worries?

1. because no construction project runs without problems
2. because it is not even decided yet what it should be and what is actually needed: bungalow vs. single-family house, how many square meters?