How accurate is Zillow?

New data just came out that took 6 zip codes from central Denver (80202, 80206, 80207, 80209, 80211, 80212) and compared those to active listings in the MLS. No surprise that 28% we're completely missing from Zillow. When starting with Zillow and looking at MLS, another 28% were not available and either Under Contract (18%), Off-Market (4%) or Sold (6%). When combined, Zillow only displays 44.7% of Active Listings compared to our Broker's MLS system.

Both this website ( or another cool app called HomeSnap ( show 100% of listing data updated every 5 minutes by the MLS. Can't beat that! Give'em a try.


A little humor on this: