[uxp100]

> Japan for example has many apartments for sale that there is no indoors shared space, all doors open to to air, this is a huge cost savings. Those type of buildings aren't build in the US.

Most of the new apartments I have been in in the South Bay are built like this, maybe with some indoor common area somewhere, but the corridors are essentially outside, like you say.

And Santa Clara and Sunnyvale are full of 2 story 16 or 20 unit apartment buildings from the 60s (u shaped, surrounding a courtyard, sometimes with small pool) and everyone’s door goes directly outside.