"Unsold inventory sits at a 3.3-month supply at the current sales pace, which was identical to October, but up from 2.1 months in November 2021," the group said in a release. Experts have repeatedly cited housing supply in the U.S. as a major difference between the current market and the market during the 2008 housing crash. Jerry Howard, the CEO of the National Association of Home Builders (NAHB), said during an interview on Fox Business on Monday that there is a shortage of first-time homebuyer housing in the market right now because it is nearly "impossible" to build.