ᐅ Semi-detached house with a continuous shed roof

I would like to build a semi-detached house with about a 3m (10 feet) offset and a single-slope roof on top. However, the roof should be a continuous single slope running from left to right (north to south) with approximately a 20° pitch, so not a single-slope roof divided into two parts crossing at an offset. I have searched extensively online but couldn't find anything similar.

Does something like this exist? If not, is it technically feasible to build without disadvantages?

I do not want the one shown in the example picture.

It should look roughly like this

I get the impression that you are not planning a duplex, but legally speaking more of a vertical two-family house on one plot of land.

Furthermore, based on your thread https://www.hausbau-forum.de/threads/kaufen-oder-lassen.29925/, I believe that your development plan likely refers to the more common new definition of “PD” as a staggered mono-pitched roof, which by the way should have a pitch greater than 25° (deg).

Given the lack of Google search results and the rarity of your request, I also suspect there is a causal connection.

Maybe try approaching your building request from the perspective of motivation: do you want to invest money by building your house large enough to rent out a second unit, where the tenant is assigned a townhouse-like “private” garden area? And what is the specific reason for the inequality between the twins?

Lastly, the advice from @Escroda might be even more accurate if you let us fully understand your thought process.

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One side is single-story, while the other is three!storeys?

You would need to input this into a software program to see what results from it.

What is quite clear, depending on the knee wall height of course: the lower side would barely be able to accommodate enough windows on the upper floor at 16! meters. Therefore, the living quality on the upper floor can be questioned.

I used your dimensions and drew the version with a 20-degree pitch. For clarification: no windows are allowed within the 3 meters (10 feet) between the two housing units at the bend.
This results not only in an unattractive building shape but also in one unit (the eastern one) having only 2 windows on the upper floor. Additionally, the ground floor is not exactly bright when you can only place windows facing east over a length of 13 meters (43 feet).
I haven’t checked the details in the other thread regarding whether this is even allowed (three full storeys). Because this applies to a single housing unit, not the average between two units. If it were a single unit, you would probably end up with two full storeys after calculation.

I see a completely different approach in the other thread.
Please keep in mind that not everyone is willing to read through all your posts beforehand in order to answer a question correctly.