Most European housing is made of concrete, stone, or brick.
It absolutely is different from typical US housing, because unless you want to run surface mount everything (which most people don’t in residential), it’s an insane amount of work to run new anything.
‘40’s homes in the US, you typically just tear down to the studs, re-run new stuff, and throw up new drywall. Boom, done.
Unless you’re in a place that did block/brick etc like some of the big cities, then yeah it’s a nightmare there too.
To properly redo an old house, you'll have to redo the siding and probably the roof too.