We examine the market structure for real estate brokerage services across six large metropolitan areas, by collecting more than 300,000 real estate listings and computing the Herfindahl-Hirschman Index (HHI) for each neighborhood. When we divide neighborhoods based on income, house value, and...

The persistence of the standard six percent real estate sales commission across markets and over time calls into question the competitiveness of the residential real estate brokerage industry. While there is anecdotal evidence that some local real estate markets are fairly concentrated, no...