are zestimates accurate?

Posted by Greg Hancock

Again, Robotic Real Estate Estimates Run into Trouble

There’s news on the real estate value estimating front (robotic version). You should ignore what sites like Zillow have to say about your home, or if you are buying a primary residence.

For any kind of Mason, Ohio real estate activity—whether you are buying or selling; financing or refinancing; whether for your family residence or as an investment—there are at least two value estimation figures that determine how the Mason transaction is likely to fare.

are zestimates accurate about house values

The first is a value estimate that you come up with: a dollar amount that reflects what the subject property is worth to you. That’s a calculation likely to be based on some mix of the property’s features, your own personal tastes, and your financial profile and outlook. If I’m your REALTOR®, it will also be greatly influenced by the research I prepare for you: the real-world values of all the latest comparable transactions that have been taking place locally—along with the asking prices of similar properties.

That figure is one thing, but the second kind is an actual appraisal—the estimate that lenders use as the collateral value for the Mason property. That estimate is the one a professional appraiser calculates using guidelines and formulas that have been painstakingly developed over time. It’s fortuitous when the first number comes close to the professional estimate—and I’m happy to say that it’s often the case.

Selling a home in Southern Ohio?

But since 2006 there has been a third kind of Mason real estate value estimate—one that’s increasingly mentioned in news of real estate controversies. This is the “Zestimate” offered by the website data company Zillow: a number that is arrived at via an automated system that assembles publicly available data. It’s stated purpose is “to aid potential buyers in assessing market value of a given property.” Unlike the painstaking reports that certified assessors create for a fee, Zestimates are widely disseminated to everyone for free. There is one problem, which I’ve mentioned before: the figures may be misleading.

Although Zillow claims an “incredibly low” national median error rate of 5%, last June they hailed a new improved algorithm that dropped the rate to 6.1%” [that’s not a typo: 6.1% is indeed a larger error rate than the still-claimed 5%]. Worse yet, research shows that in 10% of the cases examined, the error was 20% plus or minus…so a home with an actual fair market value of $300,000 could show a Zestimate of anywhere from $240,000 to $360,000!

Zillow even got it's Zestimate of it's own CEO's house way wrong!

Given that possibility, it’s probably no wonder that Zillow has announced a $1 million prize “to the person or team who can most improve the Zestimate” formula. MarketWatch points out that the contest was announced “just a week after a class action suit was filed against them” for offering unlicensed appraisals that hurt business—but the company claims the timing is just a coincidence.

Mason real estate buyers and sellers will undoubtedly continue to be amused by those Zestimates when they see them, but the more knowledgeable keep in mind that they can constitute eye-rolling mistakes. When your own Mason real world real estate affairs are in the offing, better to give me a call for information that won’t include any misleading automated miscalculations.

greg hancock, realtor ohio

Greg Hancock

Realtor, Webmaster, Social Media 513 360 7061

Contact my business partner Marty Snyder Cell: 513 292 9374

3 Responses to "are zestimates accurate?"

matt wrote: i hate zillow! They had my home $36k under fair market value, this after my agent and the buyers appraiser did their comps which closely agreed but feel like i didn't get the best price for my home because of what zillow said it was worth! they SUCK!

Posted on Tuesday, July 18th, 2017 at 7:33am.

Greg Hancock wrote: Hello Matt, I concur totally, and so sorry you didn't get a better net from the sale of your home. You may want to take a look at this article and sign the petition: - Zillow is actually hurting home owner's house values, buyers, sellers and real estate agents.

Posted on Tuesday, July 18th, 2017 at 7:39am.

Jane B wrote: Matt, Greg - I absolutely agree. I took our home off the market but offering it again more towards fall. Our agent showed us the comps and we scrutinized them heavily to get it priced right (not our first rodeo) but fair market value on the high end would have been about $240k but Zillow had us at $210. WTH? We got inquiries and showing requests, but not from buyers qualified for that much and because ZILLOW said our house wasn't what it was worth, we lost out and missed out on the range of buyers qualified better for purchase of our home. Yes, Zillow sucks!

Posted on Thursday, July 20th, 2017 at 7:28am.

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