Even some non-car-centric housing situations can lead to isolation. I've lived in a couple of mid- to high-rise buildings in walkable neighborhoods where you pr

Even some non-car-centric housing situations can lead to isolation. I've lived in a couple of mid- to high-rise buildings in walkable neighborhoods where you pretty much don't see any of your neighbors except some who live on the same floor as you. Small (walk-up-sized) apartment buildings and co-housing arrangements seem to be some of the best for striking a balance between meddling and isolation.