Ranking construction via Co2 emissions made by vehicles is incredibly dumb compared to the actual life-cycle emissions of the building including expected end-of-life and demolition. If Americans could see what insurance companies do, wood construction would be almost entirely banned.

The only reason concrete is considered "dirty" is because of America's construction lobby. Wood timber housing contains all the plastics that are leeching into watersheds and destroying the biosphere, and most wood homes aren't expected to last longer than 50 years. The amount of plastic in them doubles every decade, just within structural elements as more plywood types are used. Concrete homes are actually durable, can last longer than a century, and don't become a pile of construction debris crushed inside a landfill. I've seen hundreds, perhaps thousands, of wood homes dumped this way whereas every concrete structure I've seen dismantled was ultimately recycled to make new concrete.