Property division - house sale + house construction on a new plot

If it is a 34er area according to the Building Code, then how the surroundings are built counts. So the site coverage of a property or also virtual building lines. If you plan such a zigzag, it is also advisable to provide dimensions to see whether the property is even buildable in such a way that you can satisfactorily have a small sufficient house with some garden.
Please measure it and provide a Google Maps snippet where the neighboring buildings can be recognized.

34er Gebiet sieht bei Dir keine Hinterlandbebauung vor. Auch daran dürfte es scheiten.

Is that so? It seems to me that the neighbor to the right of the plan also has a backland development (flat-roof bungalow)

I only see now: You cannot let a garage run along three additional property boundaries. A 9 or 12 meter rule applies in virtually every state building code. The "driveway" on the right is about 9 meters wide and cannot really be used as property. Is that so? It seems to me that the neighbor on the right side of the plan also has a backyard building (flat roof bungalow)