During the 2018 partial government shutdown, which affected the timely reporting of housing market data, we began exploring alternative sources for that data that are providing a more detailed picture of recent trends in the residential real estate market at the state level than is possible with the data that U.S. government agencies regularly publish.
We're finding Zillow's data for existing home sales to be especially useful, since it covers 41 states and the District of Columbia, where we can get a pretty good idea of individual state-level trends, which we can quantify by the