No, zillows own numbers are screwed up.
They dont post how exactly they calculate the zestimate.
But if you look at the numbers for last sales *ON THE ZILLOW SITE*, you can see that shit is way off.
For example, I picked a random home in carmel valley and zillow estimates its dollar/sqft at $358.
Yet the "comparable homes list" below this house, when you sort it by date sold shows the last 3 homes sold are:
$281/sqft
$278/sqft
$339/sqft
Yes the pattern is DOWN.
The average is $329 going back to 12/05 near the peak.
Where the hell does zillow get #358/sqft for this house then??? I see this all the time on zillow.
The fact is, carmel valley droped from $350+ per square foot to under $300 now.
Zillows estimates are pure CRAP and lag hugely, and its easy to prove using zillow itself.
The Zestimate is 838K for this home.
However, if we use the last sale price of a cookie cutter home a few houses down in the same neighborhood, by the same builder, and use its price per square foot instead, then the house is really only worth $658K
Zillow says $838K, but its own data shows $658.
A 180K difference, nothing to sneeze at, 21% lower than the zillow zestimate.
Quote from jem:
Yea you must be right. zilliow gets their sales numbers from the tax records. Zillow estimates can be wrong for individual houses but the comps overall have accurately sales data. The art is figuring out which sales are comps.
but the sales records are going to be correct.
Like I said. I am a broker. i was out looking for 700,000 dollar homes with my brother in carlsbad and encinitas. I did the stats at the time with mls data.
The price per sq foot numbers were down less than 10 percent.
Your numbers are the ones that are screwed up.