Looking at two measures of average home price, I've attempted to show one metric for predicting home value increases or decreases, at an average level. I've marked out some major market events. COVID had inflated home values to an unsustainably high level and the market is already correcting for it.
A look at the Zillow market share. Here we compare Redfin, Zillow, and Berkshire Hathaway to understand the relative market share of some of the largest real estate companies in the US. Just for information, no predictions :)