Floor plan optimization terraced house 160 sqm, approx. 145 NWF

That would make a ceiling + floor construction of 48cm. What is that supposed to be - a bunker? Usually it’s a bit over 30cm all in. I was already happy for you about the 2.70m ceiling height...

In the current planning documents the ceiling is specified as 20cm with a 28cm tall structure above it. The underfloor heating and ventilation plus floor covering are to be installed here.

I think you worry too much about storage space. "Somehow it always works" ensures that you can fit everything in. Ceiling-high cabinets can hold an enormous amount of stuff.
Most families manage quite well with a "normal" house with a normal amount of storage space.
As a cyclist, I often find the parking space for bikes underrated.

I can see, maybe I’m thinking in the wrong direction. It just worries me a bit if there is no basement and no attic and I have to store any kind of stuff (and that’s not overly much for us) within the living space. But we will reflect on that again carefully.

The shed doesn’t necessarily have to be used for bicycles. There are other possibilities as well.

I see storage space like and ... it’s very important to plan the rooms so that cabinets in standard dimensions can be accommodated well and rather unobtrusively. So always make sure there is preferably 70 cm behind doors to make the wall usable for a cabinet.

Thanks, we will think further in this direction. There’s usually a reason when everyone argues in the same direction. ;)

...above that a 28cm high structure. The underfloor heating and ventilation are to be installed here + flooring.

I think that’s a lot, but if the BT has calculated it that way...

The ceiling is specified as 20cm in the current planning documents with a 28cm high structure above it. The underfloor heating and ventilation, plus floor covering, are to be installed here.

I would be interested in the exact construction (28cm).

I am interested in the exact construction (28cm).

Attached is the plan I currently have. I was also very surprised by it, but I don't think it is that significant. If the floor were 20cm thinner, one might save a stair step, but the room height would not increase; rather, the house would be built less tall. It should be considered that the developer is building three buildings on the property: a multi-family house with 6 condominiums + 2 penthouses, a multi-family house with 4 condominiums, and the three row houses. I could imagine that the ceiling construction in the row houses is therefore similar to that in the other buildings, even though it might have been possible otherwise.

If the BT always builds it like that everywhere, then I wouldn't dissuade him from it either. It's just quite a "ceiling". But ok, maybe it's also better for sound insulation between the floors.

I also don't think I can influence anything here.

Thank you all for your input so far, especially for her draft. We will use the weekend to work through the existing mental blockages and get a clearer picture of the required space.