Idk why this is such a mysterious or unexpected thing. Housing construction crashed through the earth following the subprime crisis and the deficit in available housing has not yet recovered. Prices are up due almost entirely to supply and demand. Current pace indicates the problem will probably sort itself out in a few years barring any further disaster. Some YIMBYism could speed it up.
https://www.axios.com/2023/12/16/housing-market-why-homes-ex...