Building a retaining wall in the garden: formwork stones or L-stones?

Again. How do YOU plan the drainage?

Again. This is not about drainage here. See questions in the opening thread.

Ok. My brother paid 435 euros net per running meter in 07/2023.

Ok. My brother paid 435,- Eur net per running meter in 07/2023.

What did he pay that for? What kind of wall did he build? How did he prepare the substrate? What did he pay for that? Which federal state?

What did he pay for that? What kind of wall did he build? How did he prepare the ground? What did he pay for it? Which federal state?

: Please do not reply. The original poster is not responding either.

What did he pay for that?

What kind of wall did he build? How did he prepare the ground? What did he pay for it? Which federal state?

This is not about breaking down the services here ... do you notice something? ;)

How do you come up with the narrow-minded idea that I’m building my wall first?

Well, because the impression so far was "I don’t care/know what the neighbor is doing" and coupled with statements that everything there is unsecured so far. I suspect that if you don’t plan anything together and he, in case of doubt, first arranges his support in such a way that it supports his 2 meters and then you come along afterwards wanting to add another meter, then when building your wall it will have to be considered that his support is still sufficient. My layman’s understanding would be at least that if a lot has been dug away there, then there is little pressure against your foundation and it would have to be deeper. Of course, if his support is originally designed to withstand significantly more pressure from your fill, then maybe not... But the people don’t mean you any harm when they ask what your neighbor is doing or how you both envision it overall.