Garage insulation is not mountable

As far as I know, the neighbor has to tolerate construction measures that are important. The condition is of course that the previous state is restored. I would not pay the full price under these conditions.

This solution mentioned by , is it applicable from the inside?

That would be a foolish act, not to keep the water away from the wall but to trap it inside ;-)

Is building here done at all with architects or rather with GÜ/BT?!

We are building with an architect. However, he thinks that this is not so bad...

From the outside, you actually can't get there anymore. Only from the inside could something still be done.

Why should people no longer come because of the Earth? Not your problem, they should excavate it.

The property ends with the concrete wall of the garage. To dig, I would need the area from the neighbor. [Dieser hat dort bereits bepflanzt und Pflastersteine gelegt.]

Therefore, the question is whether something can be done from the inside.