I think Zillow is great for getting a ballpark estimate of your home’s value… but that’s it.

They certainly are not accurate enough to determine a list price for your home.

Admirably, Zillow actually tells you how accurate/inaccurate their estimates, called Zestimates, are.

Zillow can look at their Zestimates and then at what the homes actual sold for to determine the error.

For the Phoenix-Mesa, AZ metropolitan statistical area;

  • 36% of Zestimates were within 5% of the actual sale price
  • 61% of Zestimates were within 10% of the actual sale price
  • 84% of Zestimates were within 20% of the actual sale price
  • Overall, Zestimates had a median error of 7.5%

Let’s say this another way.

  • 16% of Zestimates were off by over 20%! Double Yikes!
  • 39% of Zestimates were off by over 10%
  • 64% of Zestimates were off by over 5%
  • Zestimates were normally off by 7.5%

Zestimates are fine as long as you know how accurate/inaccurate they are.

Declining Accuracy

By the way, Zillow used to say that in metro Phoenix 28% of Zestimates were off by over 10%. Now they say 39% of Zestimates are off by over 10%. I appreciate their honesty.

As long as you know.

Forewarned is forearmed.

Previous post.

January 10, 2008 by
 
About The Author

John Wake

Born in Phoenix, trained as an economist and now a licensed Realtor, John uses hard data from the real estate market to help his clients -- buyers and sellers of residential real estate -- uncover their best choices for finding the right home or finding a buyer for their current home.

Archives

Categories

56 queries. 0.828 seconds.