Plot on a slope; who bears the anchoring costs?

Dear people, thank you very much for your answers! I feel a little smarter now

cheapest solution: you stay about +-20cm from the original height and all larger height differences then fall to the neighbor's expense. or you agree reasonably and split it half and half. or you go through with it as mentioned above and you might have to pay. of course, you only have to pay for the slope from your removed height to the original one. if he builds higher than before, he is equally responsible.

A brief addition: From a distance, it is difficult to assess what may need to be secured through a special building application regarding terrain alteration. Of course, one can act as if only pursuing their own project, but I am sure that together with the neighbor’s architect, the neighbor, and the building authority, a technical solution can be found that secures both parties’ expectations and can then logically be divided/allocated in terms of costs. If both building applications are submitted more or less simultaneously, the building authority can also fully see how it is supposed to look in the end. That would be optimal. Best regards, Dirk Grafe

The building application states how you want to mark your property boundaries?

The most most most important thing overall is definitely that you find a reasonable solution with the neighbors. Otherwise, you’ll have the chain-link fence already in front of your door before you move in.

does the building application state how one wants to lay out their property boundaries?

Yes, if the height of the property is to be changed significantly or partially, as already described by , keyword "independent embankments/excavations." see above.

On this topic, you can also quickly google a tangle of rulings/court cases, which immediately makes it clear that you better take care of this before construction and not just do whatever you want. The affected neighbor usually does not find this amusing, nor does the building authority, and then it proceeds according to the legal text.

Best regards
Dirk Grafe

ok. Height differences with us are in the 10-20cm range. Concrete paving slabs as boundary supports are always more than sufficient.