How Accurate are Listings on "National" Real Estate Sites?

Erick Schonfeld:

The results are in the chart above and, not surprisingly, Roost comes out looking great. For each city, it returns between 95 and 99 percent of the listings in the MLS. Trulia's accuracy in the study ranges between a pitiful 9 percent for San Diego to 61 percent for Miami. (Zillow generally does worse across the board, with its accuracy ranging between 12 percent and 36 percent across the three cities). Trulia disputes these results. Heather Fernandez, vice president of marketing, says:

Virtual Properties Main Street internet platform interfaces and replicates many MLS systems. The article includes an interesting look at the VC (Venture Capital) funding of several "national" real estate aggregators:

• Roost: $5.5m
• Trulia $32.8M
• Zillow $87M
• Redfin $20.8M