Floor plan city villa with hipped roof approx. 170 sqm

How is that defined?

Today probably in the Wohnflächenverordnung, although I was more familiar with the DIN:

Is it sufficient if I cover terraces in order to include them as fully valid m² in the calculation?

I seem to recall that a covered area counts as half of the outdoor space and an uncovered area only as a quarter.

Oh, really!
I find the new ground floor more appealing. The open space is back in the upper floors – I thought you could see that.

I find it hard to imagine that I’m pulling something out of your pocket that you like. In my opinion, your priorities are still somewhat outside of what I can understand. For example, square rooms are only nice for dancing. They are completely unsuitable for furnishing and arranging. Especially a utility room needs preferably long walls for installation. But beds, wardrobes, and sinks also usually want to be placed against a wall somewhere. That’s why it’s best to plan rectangular rooms.

Looking from the front door into the garden is rather disadvantageous for terrace comfort when the postman rings. But okay.

If I feel like it, I’ll gladly scribble around a bit again. But I already find the last draft with the changes quite good.

Sorry, I completely overlooked the open space! My mistake!

Please don’t misunderstand. Just because I like the things mentioned in the current draft doesn’t mean that we necessarily have to have them. Currently, the individual rooms come together to form a composition that appeals to us. I just listed the reasons why that is.

You are absolutely right about the square rooms. I also didn’t say that we generally like them. But I find certain rooms square "better" than rectangular, such as a living room or the office. Especially regarding the utility room, I wrote that we really like the rather elongated than wide shape, because – as you say – we need a lot of wall space and rather less space in the middle of the room, as that space would be wasted. That became very clear to us quickly after several visits to show homes, and it’s actually logical as well.

The sightline was/is a big wish of my wife’s to bring a certain depth into the house.

I hope you get inspired to tinker with it; we would definitely be very happy!

At least for a carport that transitions into an extension, I would assume there is no exception here in case of doubt.

This means conversely: Ground floor = 3/2 of the upper floor = 3/5 of the whole => at least 20% must first be subtracted from the total floor area before it can be "evenly" divided. My approach would therefore be to look for correspondingly significant rooms in the space program that are assigned by lot to move downstairs. This means that, until this measure is met, e.g., utility room, office, guest room would presumably be downstairs; ground floor terrace areas would likely be roofed over more extensively and upper floor terrace areas are practically dead from the start. You can also trick with the roof: just as, for example, with a gable roof dormers the size of the entire bathroom are often built, you can also partially reduce areas under slopes below the 230 cm threshold.

I have attached the excerpt from the development plan again. Maybe it helps..

There really are houses where the roof pitch is manipulated in such a way that the upper floor counts as a full storey, even though the look from the outside resembles a completely cubic urban villa. Just as you said, by not exceeding the 230 cm mark sufficiently at various points on the upper floor. However, we did not like these houses at all during our exploration of possibilities.

It is indeed not only that we see the advantage of having no sloping ceilings upstairs if we make the ground floor significantly larger than the upper floor, but that for us the rooms must automatically move to where we can use them best. I would find an office upstairs poor, my wife would find a utility room upstairs suboptimal (although I am actually a fan of having the washing machine upstairs, but well). That means we would find the variant with the staggered storey the nicest for us also in terms of room layout. In addition, there is the factor that by having only one full storey, we have the possibility to keep the walls straight upstairs.

Does it now also matter that it looks like a city villa, or is it only about the 1.90m minimum height so that one can walk comfortably everywhere?

I just designed something here:

Would that also be acceptable in terms of style?

Unfortunately, I do not see the attachment.

Edit: just couldn't insert the link....new attempt:

https://www.hausbau-forum.de/threads/Grundriss-efh-ca-190m-optimierungen.31470/page-6