Baumol’s Cost Disease means construction labor cost rises faster than productivity. We’re allergic to prefab construction - banks and insurance companies block it. A lot of construction workers left the industry after 2007. Baby Boomers are retiring and told their kids to not get a blue collar job. New housing has to be ADA compliant. People expect to give each kid their own bedroom and have two car garage instead of one car or no garage at all. Recent immigration crackdowns and trade wars are the icing on the cake.