Zillow.com got itself a ton of new venture capital yesterday, so today seems like a fine time to deconstruct its praxis.
When Zillow was brand new, Catherine Reagor, the dippy local real estate reporter for the Arizona Republic wrote:
Want a reality check? Go to zillow.com, a new Web site with a program that calculates a home’s value for free. It values several Valley homes for tens of thousands less than the price listed on them.
At the time, I said this in response:
If you want to know what your house is worth, do not go to Zillow.com, which delivers completely useless estimates of value for free. Even Net Value Central, a tool used by professionals, lags the market by a month or more. The only way to price a house is to work as rigorously as possible from current and recently-sold listings for extremely similar properties. If you price your house to sell from sources like zillow.com, you will give thousands of dollars away. If you rely on zillow.com to tell you how much to offer on a home, you will see it sold to someone else.
(You can prove all this to your own satisfaction, if you like. Most of Ms. Reagor’s mistakes seem to come from falling in love with ideas she doesn’t check out. Here she tells us that she ran Zillow.com on live listings and found it came in much lower than the listed prices. How did it do against sold listings? She didn’t check, but you can. Run Zillow.com on the sold homes documented in your local section of the Republic. You’ll see that, time after time, Zillow.com is substantially under real-life market results. It’s a useless toy, which Ms. Reagor might have discovered on her own had she bothered to test it properly.)
Just lately, I needled the Zillowites a little more:
All right, here’s the deal with Zillow.com:
I decide I’m going to buy you a pair of designer jeans, nothing but the best for you. I know that fit is important, so I go to three of your best friends to get their sizes. Not yours, theirs. I strike Read more
But Friday can be a rough day if I’ve said anything even remotely controversial. I’ll get angry — but anonymous — phone calls from testy Realtors and brokers all day. Their being angry is fine. I just wish they wouldn’t waste my time venting their ire on the phone to me. Coming in anonymously — no name, no disclosure of license status, no brokerage affiliation, Caller ID blocked — is cowardly.
Last Friday 

