Data Center

Methodology

The number of sellers in the market is simply active listings, or the total number of homes actively for sale at any point during a given month. Active listings data come from the MLS.
Because there is not a similar metric measuring how many buyers are actively in the market, we developed one. We took active listings and pending sales from the MLS to estimate what fraction of homes on the market will sell within a given month. Analogously, we estimated what fraction of buyers on the market will find a home within a given month using Redfin data on the typical time from first tour to purchase. The ratio of these two data points approximates the ratio of buyers to sellers in the market. We then multiplied that ratio by the number of active listings to get the estimated total number of buyers in the market. Note that our estimate of buyers is not based on Redfin traffic or customer acquisition data, and the purpose of this analysis is to measure the number of buyers and sellers in the housing market as a whole. All metrics that go into our calculation of the number of buyers and sellers in the market are seasonally adjusted.

More details: https://www.redfin.com/news/buyer-vs-seller-methodology