It's also the country where not being able to live in a detached house is mostly seen as not worthy of middle class. That's far above the standard of Western Europe, where people in middle class lives in flats.
This article is about Sweden, remember. My parents have two houses, one outside Gothenburg (big enough that they have converted the floor me and my younger brother lived in into two apartments, one if four bedrooms the other one is two) and a beach house further up north. They're from a completely different generation with different priorities.