ᐅ Unclear zoning regulations regarding facade recesses

Hello everyone,
we purchased a plot of land with an existing basement in the middle of the year. We want to build a new house on top of it. However, the existing basement floor plan limits us somewhat in the facade design because of an existing terrace.
After several discussions with general contractors, prefab house suppliers, carpenters, and a well-known architect, we have received many different explanations regarding our desired exterior facade. So far, the local building authority has only given us superficial or general statements.
The issue is that the facade may only be set back by up to one-third — but does this only apply to the eave height? Or not?
What do you think? Would the facade comply with the development plan / building permit?

Here is the floor plan of the existing basement:

Here is a sketch of our desired facade:

Here is the relevant excerpt from the development plan:

You need to meet certain requirements here, starting with the eave heights, which must be between 2.5 and 3.5 meters (8 to 11.5 feet) above the street level on the street-facing side, and a maximum of 6.5 meters (21 feet) above the ground surface on the garden side. My impression, among other things based on the ground floor plan in https://www.hausbau-forum.de/threads/alter-keller-gekauft-traegt-er-nur-holzstaender-oder-auch-massiv.36418/page-2#post-433085, is that the top of the cellar ceiling is roughly at street level, so I do not see you achieving the moderate knee wall height on this side. On the garden side, your recessed eave side steps back over more than one-third of the house length, so here the knee wall height maximum would apply as a limit—I do not see the knee wall height as shown in your drawing here. Applying the requirements to this "inner" eave side and more or less lowering the roof into the "ground floor" would be feasible in my opinion. It would also be worth exploring how the option of a staggered shed roof and/or asymmetrical roof pitches could be used. However, the aerial photo (see attachment) also suggests that the burned-down building may have had the terrace roofed up to the "central post" as a workaround—without an exemption, I would expect this to apply to the outer wall as well, at least in an implied way, with the consequence that the attic floor would need to be extended that far as well.

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https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/

Thanks in advance!
We estimate the knee wall height between zero and a maximum of 40cm (16 inches), depending on the ground floor ceiling height and how much the ground floor base is raised. This allows us to comply with the facade height limits of 3.5m (11.5 feet) facing the street and 6.5m (21 feet) facing the garden.
The knee wall requirement is provided in text form above—at the very bottom under section 2.4.

11ant schrieb:

Without an exemption, I think this should also apply to the exterior wall, at least implicitly, with the consequence that the attic floor must be extended accordingly.

Do you mean like this? (Red wall)

I didn’t find the asymmetrical roof pitch very appealing due to the slight difference in angles, but I was also thinking about something like this?:

OlliQueck schrieb:

Do you mean like this? (Red wall)

No, the wall would also need to be extended, see the blue frame in the attachment.

OlliQueck schrieb:

I didn’t find the asymmetrical roof slope very appealing because of the slight difference in pitch, but I was also thinking of something like this..?

More complicated to build, but probably feasible. What do you mean by difference in roof pitch? – I meant a simple gable roof without the ridge at the centerline.

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https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/

11ant schrieb:

What do you mean by roof pitch difference?

Oh, I was thinking of something like this:

but we don’t really like it.

11ant schrieb:

No, the wall would also have to be extended, see the blue frame in the attachment.

Okay, hmm... I’ve placed the views of the old and new facades side by side here. In the old house, that part was also open. However, you can also see in the west elevation how the new roof ridge would be a bit higher.

OlliQueck schrieb:

Oh, I was thinking of something like this:
[IMG width="194px" alt="dachneigungen.JPG"]https://www.hausbau-forum.de/data/attachments/52/52573-7531fc23a7d5a279322959d4e361680c.jpg[/IMG]
but we don’t really like it.

Me neither, that’s why I wasn’t thinking of something like that either.

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https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/