[inglor_cz]

The Czech Republic. I have seen this in all homes under construction that I saw, except for wooden ones.

Granted, it is a small set, N < 10.

[pjerem]

I didnt noticed that it was a picture of your inner walls. In France, we only use bricks/concrete for the structural walls. The inner walls are almost always "placo" mounted on steel rails. It looks like this : https://www.monsieurpeinture.com/wp-content/uploads/2021/05/... or https://www.monsieurpeinture.com/wp-content/uploads/2021/05/...

[toast0]

It looks like 'placo' is what USians call drywall or sheetrock. (pressed gypsum with a paper backing). We'd call those rails studs; low density residential construction is usually wood studs, but I've got a project going with metal studs because with current pricing trends it makes more sense; metal studs also require armoring electrical though, and there's some other issues depending on use case.

[inglor_cz]

Interesting. This is how ceilings are done here, but I haven't seen a private home with walls like that. Offices, yes.

This might be one of the reasons why Czech construction costs are so high. Expensive material everywhere.