development plan, building line, building boundary, building window

Hello, I do not intend to play ping pong here, but I still want to thank you for the explanations as well as the valuable feedback.

We are no longer on topic. The text above is a communication gap between the architect and me. There was only one conversation with the office and only one design inquiry from the architect and also only one feedback from the office to my architect. Now it is about understanding the feedback correctly, because as can be followed in the course, there is a gap in the interpretation. In consultation with an architect, it was only a mental exercise without actually understanding it. I want to say again, it only concerns the sentence "massive Überschreitung der Baugrenzen mit Angabe der T x B," no more was fed back by the office. Now the consideration is simply whether it is related to the yellow line. We will understand that after consultation with the office. Thank you for your efforts. Ps.) It is the parallel street in the residential area and not somewhere where the high-rise building also stands.

I would like to clarify once again, it is only about the sentence "massive exceeding of the building boundaries with indication of T x B," nothing more was reported back from the office. Now the question simply is whether it is related to the yellow line.

Since the yellow line grazes along the back of your existing building, any extension with T > 0 would cross this line; and your desired extension would have for itself T = again 1/2 building window depth, which is clearly "massive" without any fuss.

Thank you 11ant, I think I understand now, so it is like in the question = NULL. With the known conditions to me and the expert knowledge in the forum I was able to cross-check and realize to abandon the idea of planting. Thank you all very much...Best regards