The origin height is 2.70? And you both have dug down towards the street because it is "finer" for the car, garage, and so on? B has to pay his own bill.
Whereas his garage was only erected together with our garage and the parking space! Before (until 4 months ago) it was all "earth".
Isn't the mistake already there, where the neighbor builds a garage that is not earth-pressure resistant directly on the boundary, where earth pressure threatens according to the original terrain height?
Then I see it that way too.
B has to pay his own bill.
If the OP is nice, he rents the devices for moving including operators for both.
Once again for explanation: Everyone has to regulate their own change. And at the back at the height of 2.70 nothing was changed, only at the front. In this respect, he has to take care of his garage himself. How did he regulate it with the lawn area and the garage at the back?
@11ant: What kind of equipment for moving do you mean? It’s only about the 2m L-stones that still need to be installed ...
uh ... You already set the stones and just left out the two pieces for him plus didn’t ask him if he wanted to join your construction project and if you’d order the stones for him as well??? And you set the stones by hand????? – are you Chuck Norris or Hulk Hogan’s trainer? I wouldn’t even know how many more sandwiches I’d have to eat to just casually place two-meter seventy high retaining walls like that ... Respect!
At the back of the garage, earth is filled up to 270cm (as high as the garage roof), therefore the rear side is also designed to resist earth pressure ... I do not understand his reasoning (I am not allowed to endanger his garage from the side with my earth pressure, but he can simply fill in "his" earth at the back ...)