You can have quite a close knit community in single family homes - I've known and been parts of neighborhoods where everyone wandered into everyone's house, but you'd never know that looking at the plats.
Communal areas like a shared kitchen immediately fall to the tragedy of the commons, unless there's a HOA or similar that directly pays someone to maintain it.
Communal areas like a shared kitchen immediately fall to the tragedy of the commons, unless there's a HOA or similar that directly pays someone to maintain it.