These remind me of the post-1906 earthquake shacks](https://sf.curbed.com/2017/4/18/15333168/sf-quake-shack-houses-camps). Better built attached housing would likely let people live better at a similar, if they could manage to agree on reasonable rules about living just a bit closer.
I’m not sure that’s enough concrete to drown out neighbors I’ve had. I’ve lived in buildings with about that much concrete between apartments but I’d still hear the bass of music at 3 AM.
It was probably coming out of a window