Development plan - permitted roof shapes for transverse gables

And with that, it is not a dormer window, but a cross gable

No. I don't want to be a smartass. But the "Zwerch" comes from the northern German word "quer" and means "across." So it refers to a gable across the main gable. Specifically, a classic "triangle" gable.
But in the end, it doesn't really matter.

No. I don't want to be a smartass. But the Zwerg comes from the Low German quer and means "across". It refers to a gable across the main gable. Specifically, a classic "triangle" gable.

Yes. Everyone is welcome to add something to my pile of smart remarks; I never speak Plattdeutsch as well as Yared anyway. In the overall (High) German building law, what the common folk call a dormer is always considered a Zwerg house (whether gabled or not) when it grows out of the outer wall (and it does not matter whether that is the general facade or a risalit). Therefore, in image #1/left as well as #1/right and #4 it is a Zwerg house; in image #1/right it is also a Zwerg gable. A "dormer" is only "real" if it is set back behind the eaves (not just the gutter!); it usually rests on the knee wall plate (Drempelpfette). Since in contemporary building styles the knee wall has largely replaced the Drempel, the related terminology has become blurred. And the common folk call the risalit a "(floor-to-ceiling) bay window" anyway — so be it. The Zwerg gable is called "Wiederkehr" in southern Germany.

No matter what we want to call it, do all my pictures always fall under a "roof structure"? Since there is an empty line without any restrictions under roof structures in the development plan, can I simply do whatever I want?

Although I wonder, if you are allowed to build two full stories per se, why don't you just build two "normal" full stories and then a classic gable roof as a basement replacement.

That is Plan A, simply 2 full stories + gable roof on top.

Now, the prefab house builders brought up Plan B, that you could also work with an increased knee wall + 2 extended "dormers/gable dormers". The house length would be ~13.5m and the dormers would each be 4m.

I thought the idea of the shed roof was completely crazy at first... but the longer I look at it and fit the floor plan accordingly, the more I like it. Especially since the shed roof orientation would be perfectly facing south and thus perfect as a solar surface. Including the garage, I could cover all 3 cardinal directions.

But before I deal with it, I wanted to first clarify if that would even be theoretically possible under building regulations. I didn't want to ask the building authority directly out of ignorance, because it's a very small community... and if I get a no once because I couldn't argue why, it will probably be a tough nut to crack to persuade them afterwards. The flat roof was more of a theoretical example, the thing is actually no option, since I can already see that in the next 10-20 years the soup will be standing in the house.

Thanks in advance for the initial assessment.
Other opinions are welcome as well.

Since there is an empty line without any restrictions under roof structures in the development plan, can I simply do whatever I want?

It does not always require a specific permission or a definition in the development plan if it is simply irrelevant or already explained by the state building code. A development plan is usually a restriction or an extension.
So if nothing is stated, in my opinion nothing stands in the way of it.
Building setback and parking area are also not defined separately, by the way. Because it is not necessary.
Because the state building code and/or the building law applies.

all my pictures would always fall under a "roof structure"?

Yes.

Since there is an empty line without any restrictions under roof structures in the development plan, can I simply do whatever I want?

Yes and no:

This is Plan A, simply 2 full stories + gable roof on top. Now Plan B came up through the prefab house builders, that you could also work with an increased knee wall + 2 extended "dormers/gable projections". House length would be ~13.5m and the dormers both 4m each.

You are of course not allowed to combine Plan A and B in such a way that your attic becomes a third full story above the upper floor. You may build a knee wall there, the ridge height restriction is not tight, and you do not have an eave height restriction. But don’t get too ambitious, otherwise you’ll have problems. Are you Snow White and need space for seven dwarfs?

Are you Snow White and need space for seven dwarfs?

Then I would have to build 7 dormers. It's a combination of living and working, so somewhat larger.

This here should come much closer to the whole thing, just the "dormers" pulled a bit forward so that they stand out a little visually.

[ATTACH width="530px"]90732[/ATTACH]

Of course, it's all a matter of taste, but this would at least be something "different," which you hardly ever see around here... in the new development areas, one townhouse after another stands that all look like they're from the same catalog.

But thanks a lot for the information anyway! I'll take it as an option, and would cautiously inquire at the building authority beforehand if it gets included in the final rounds. But I think I now have the right info from you to approach this.