10x10m city villa (approx. 155m², 6 rooms), fine-tuning desired

You are suppressing the first posts in this thread. When you are advised to pay attention to the orientation of the rooms and the course of the sun, that is constructive - if you then place the bathroom and the "hobby room" in the sun-drenched corners, one can only repeat oneself or suggest you see an architect. Constructive advice has its limits when the development plan raises questions. This is going around in circles here.

A large single carport will not be useful to you if two parking spaces are mandatory.

For us, two parking spaces, each individually accessible, are mandatory for a single-family house; so parking one behind the other would not be allowed in new planning.

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I find that a bit strange, with most plots (at least here with us) that is not possible at all, as they are simply too small. Especially the new building plots are getting smaller and smaller!

Best regards
Sabine

I find that a bit strange, with most plots (at least here with us) that is not possible at all, because they are simply too small. Especially the new building plots are getting smaller and smaller!

Best regards
Sabine

Site plans are usually adapted to the size or surroundings of the plots. Therefore, such requirements for parking spaces on one's own property will certainly not be found in densely populated areas where plots are smaller. Building land in the countryside without connection to a street with parking possibilities will have different regulations.

That’s why I say: one should inform themselves first and only start planning accordingly once the cornerstones are firmly in place.

So before I discuss the shower and the toilet, it must first be clear where I will build what and roughly how. It seems to me that this hasn’t really happened here. You still don’t know how this or that is, etc.

So clearly my recommendation: gather information about what is allowed, what is not, what has to be considered, where there are restrictions (building regulations, budget, etc.), where there is room for maneuver.

Then a rough concept of how the property can and should be developed (i.e. where the garage/carport, terrace, house, access, what on which level, what is necessary for that, etc.) and THEN I think about where the couch could fit and whether the toilet should go here or there.

Of course, the temptation is great to build your "house" first, but if there are circumstances to consider, then the most beautiful plan won’t help because it might fail, for example, on a slope, or because there are certain requirements, etc.

The interior layout has already been discussed here, and then the garage moves from left to right and back again. That cannot work.

Budget: I would seriously consider creating a coherent concept adapted to the property and possibly initially realize only the necessary part and continue to work on it in the coming years. For example, with my suggestion: first just build the necessary retaining walls. In my opinion, it makes more sense to implement a well-thought-out design step by step than to do something with trial and error that might work well elsewhere, under different conditions, but unfortunately not here. The result will always be unsatisfactory because it is inappropriate.

You are omitting the first posts in this thread. When you are advised to pay attention to the orientation of the rooms and the course of the sun, that is constructive – if you then put the bathroom and the “hobby room” in the sun-loved corners, one can only repeat oneself or recommend an architect to you.

True enough. A constructive contribution would be, for example, simply to mirror the upper floor vertically. Problem solved.
To put it into perspective: as children, we had our rooms facing east, with a house and a tree directly in front. I cannot recall ever thinking about it, let alone being bothered by it.

: I don’t think there is such a limitation here. As mentioned, we will go to the planner with the two alternatives (carport one behind the other east vs. carport side by side west) and get advice. Maybe it will be something entirely different (carport side by side south with 8x12 house or stepped to fit the building envelope). We’ll see. I have probably rushed in a bit too quickly when the basic architecture is still unclear (or I have not expressed that clearly enough).