Floor plan house with granny flat - improvement suggestions?

Here are a few points of reference for the upper floor: [ATTACH alt="Grundriss-haus-mit-elw-verbesserungsvorschlaege-594486-1.jpg"]74684[/ATTACH]

Thank you very much! Could it be that in your plan the upper floor is a kind of recessed floor? I'm trying to imagine what the front of the house will look like.

It of course also depends on the material, but especially as a partition wall it should be at least 25cm thick, since normal apartment walls are too thin for soundproofing. Which is completely normal for 11 or 12 cm walls.

...that too. But there is also the option - the WTW 2 x 15cm thick with 4cm insulation material in between. That is supposed to provide even better soundproofing and the workers wouldn’t have to carry the heavy 30cm stones.

What thickness do you think the ventilation unit should have? We were told that for soundproofing, a 30cm wall would be recommended.

This is not a question to be answered by the parameter wall thickness. The soundproofing argument here is a knee-slapper in exactly my preferred humor league (note: we are talking about a wall, on both sides of which the stairs adjoin, the one of the granny flat probably even anchored in it). Apparently, the planner needs considerable remedial teaching in both fire and sound protection here, but I am a construction pilot (consultant for builders) and not a planner trainer. To the best of my recollection, we discussed the problem regarding sound transmission most extensively here:

and the workers would then also not have to carry the heavy 30cm stones.

With a concrete wall, no stones are carried at all; it is formed and poured.

No, and I ask for forgiveness if I have been understood by laypeople as criticizing them for that. Laypeople (and in preliminary drafts) I point out – I criticize "architects" for that (and in supposedly submission-ready plans)!

Nope..
You don’t have to apologize to me. And the others you may have confused over the past years no longer read this. But I have read over the years that you went from "I don’t get involved in floor plan discussions" until one or two months ago to (felt like) constant criticism of building dimensions (not the floor plan) for several years, except for the more tabular critique of drafts, where you were very involved. I certainly noticed that because I myself had to switch to a program where you can’t influence everything. However, it should also be understandable to constantly point out that everything should be taken as a sketch: scale-true means payment according to HOAI, not any longer in that sense.

In a preliminary draft stage
it is about planning a room layout – and to do so in a way that "works" even when no furniture is precisely "wedged" in centimeter accuracy.

Of course, it depends on the material, but especially as a partition wall it should be at least 25cm thick, since normal apartment walls are too thin for soundproofing. Which is completely normal at 11 or 12 cm anyway.

25 does not exist at all…!

Could it be that in your planning the upper floor is a kind of recessed story? I’m trying to imagine how the front of the house will look.

It has nothing to do with a recessed story. However, there is a corner in the house, that’s true. The plot is simply too narrow at that point. I would also prefer to have the house wall straight, but depending on which wall I choose, the floor plan either becomes too small or we cross the building boundary. It is also a question whether the corner is sufficient as is, or if it might need to be even bigger. We don’t have the dimensions of your building window – we can only roughly guess what is possible. I have the feeling you don’t know the dimensions yourself – otherwise you probably would have told us already. Whether one could possibly apply for an exception to overbuild the boundary for such a corner – sometimes that’s possible. Since it is street-side, it does not affect a neighbor. But I wouldn’t count on it.
Unfortunately, I don’t have some flashy modern program with hip exterior views. It’s all a bit outdated. But at the moment it looks something like this:

[ATTACH alt="A1.jpg" type="full"]74689[/ATTACH]

The roof simply spans the bend. That is probably cheaper than elaborate constructions.

The roof simply spans across the kink. That is probably cheaper than elaborate constructions.

I fully agree with that assumption, however ...

Could it be that in your planning the upper floor is a kind of staggered floor?

... I also read your design in post #100 as a staggered building body in the style of the Tuscany staggered substitute villas, and consequently do not recognize it in the view in post #113.

Nope.. You don’t have to apologize to me. And the others you might have irritated in recent years don’t read this anymore. But over the years I have read that you went from “I don’t join in floor plan discussions” to (until one or two months ago) the (felt) constant criticism of the building dimensions (not the floor plan), except for the more or less tabular criticism of designs where you were very involved. I noticed that very well because I myself had to switch to a program where you cannot influence everything. However, constantly pointing out that everything should be taken as a sketch (which should be understandable: to scale means payment according to HOAI, no longer in the proper sense).

With you I never apologized, I cannot follow a large part of your post, and that I “would not join in floor plan discussions” or that I changed my attitude a few months ago is nonsense without substance. My discussion behavior here is consistent, and my approximately twelve-week forum coma by my own decision was purely a break without any substantive interruption. From the beginning of my involvement I have refrained with very few exceptions in two tightly focused areas: namely that I largely stay out of financial discussions (and even completely from the question whether one can afford their building wish in tariff group xy), and that I (lacking fun with drawing programs) almost never translate my words into drawings.