The space doesn't cost as much as it once did. In almost every market, the land is the expensive part, not the house. Modern building materials are cheap and e

The space doesn't cost as much as it once did. In almost every market, the land is the expensive part, not the house. Modern building materials are cheap and energy efficient. I moved from a 1400sqft 1930 built house to a 3600sqft 2014 built house, and the new house costs half as much as the old one to heat and cool. For a builder, there's hardly any reason not to build the largest house that fits on the property, because most of the high cost components are the same if you have a small house or a large house.