Building Authority Problems - Purchased a Defective Plot

Hello dear ones. We are desperate.. our building application has been with our building authority since Christmas and there is no end in sight. We are building a prefab house with a large, well-known company and so far everything was fine. Our plot is located in the old town center. The previous owner had an old farmhouse demolished and we bought the plot in the following condition: Plots in our area are like a 6 in the lottery, so we seized the opportunity. Now the building authority complains about the following: We have no intention of enlarging, extending or otherwise changing any wall. We do not know where the building authority gets this information from. Neither the building authority nor the architect can help us further. An endless back and forth. We bought the plot exactly as is without any changes and have no intention of altering, filling up or otherwise modifying this slope. So absolutely nothing relevant to the building application. Therefore, we do not understand this whole circus at all. The plot is 1400sqm and the distance from the house to the wall is about 9m. Actually, the slope and the wall should therefore be completely irrelevant for the building application. Mind you, this slope has existed exactly like this for almost 150 years. Inside there is a very old rock cellar. Do you have any idea what this is all about?? Or even better: how we can get out of this mess Many thanks in advance!!

Hello Laufi, don't panic!!! This is official bureaucratic language! At first, it seems that the actual property does not quite correspond to the building application. The mentioned "Planfertigerin", obviously an architectural office, has to make corrections. For them, this is "old hat", they know this. So someone must have indeed submitted planning documents. And that person "is liable" of course for the accuracy (contract for work and services). That person should clarify it. However, if the situation is completely different, get back to me!

What does the property look like now?
As I understand the letter, work has already been carried out?

How does the property look now? As far as I understand the letter, work has already been done?

Still exactly the same. We haven't done anything to it so far.

Thank you

Hello Laufi, don’t panic!!! That is bureaucratic German! At first it seems that the actual property does not quite correspond to the building application. The quoted "Planfertigerin", obviously an architectural firm, has to make corrections. For them that is "old hat", they know this. So someone must have submitted plans after all. And that person of course "is liable" for the accuracy (contract for work). He is supposed to clarify it. However, if it is completely different, get back to me!

Thank you, that already reassures me a lot!! Then I will call the planning office again directly tomorrow.. best regards

Obviously, the rock cellar is not known to the authority (= presumably not officially mapped), and the "Kommunwand" made of rock cellar slope support and former farmhouse outer wall is - from my point of view completely understandable, my impression would be the same - considered to be an incomplete demolition of the farmyard. The rock cellar covering under the wild small forest is apparently considered to be an unauthorized terrain modification (embankment), "talseitig" means the side towards the plain, i.e., the wall with the door. The "Ortseinsicht" is an on-site inspection during which the authority employee noticed these discrepancies between his archive map and reality. Presumably, someone called who you "snatched away" the fallow land from and who now wants to "get back at you." No living person is probably responsible for these discrepancies, outdated map material is not your problem. The walls are certainly not new - whether already protected by customary law is hard to say - but indisputably not of heavenly origin. If they - possibly also the rock cellar - are an illegal construction, as the landowner you could be threatened with the demolition of the whole thing (wall and "rock cellar" along with earth embankment) at your expense :-(