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True Confessions: Zestimates are not 100% accurate.

By
Real Estate Agent with RE/MAX Shoreline New Hampshire & Maine

Spent the day in Boston Wednesday at Inman's "Agent Reboot" an event billed as a: "power-packed, low cost, local event for real estate professionals. This one-day, fast-paced program, will equip agents with the latest in business development, technology and marketing skills to help them be more successful. Agent Reboot is being offered in 12 cities across the United States."

Well, with a promise and a build up like that who could resist so I went.

Pretty cool stuff all day long, Daniel Rothamel, Founder of RealEstateZebra.com, and @realestatezebra on twitter was the moderator and presented some of the fast paced material.

One of the perhaps unintended but certainly surprising tips revealed was that Zillow's "Zestimates" for home values through the United States are not 100% accurate but only...........well, a Zestimate.

Turns out the guess..........or, Zestimates can be off as much as almost 50%! Yep, and it's published right there at bottom of Zillow.com at a tiny link innocuously titled: "Zestimate® Values & Accuracy"

Go check out your own area and see how wrong they are there. And the next time a seller (or buyer) starts beating you up with a Zestimate put out the Big Z's own data and lay it out in front of them. Odds are good you have better data and a better real world number for the price or projected price than they have.

Here's what a portion of what their dart board...................er, chart looks like:

zillow real estate estimate jim lee portsmouth nh realtor

 

I have a better idea.

 

a capuchin monkey throwing darts

 

 

Monkey throwing 1 dart  hit the target 100% of the time

2 darts 50% 

3 darts 66.3%

4 darts (after banana break) 75%

5 darts 80%

*Added information: If there was a house behind the dart board the monkey hit either the house of the dart board 100% of the time.

**NOTE** In full disclosure that was my monkey's results. Your monkey may produce entirely different results.

Posted by

Jim Lee , REALTOR®, Certified Residential Specialist (CRS)

http://JimLee.com  RE/MAX Shoreline

100 Market St., Suite #200, , Portsmouth, NH 03801 Phone: (603) 431-1111 x3801

Visit New Hampshire Maine Real Estate.com to search homes, get Seacoast area information, and find out how great living on the New Hampshire and southern Maine Seacoast really is.

 

Follow RealtorJimLee on Twitter

Nina Rogoff
Boston, MA
Wix Websites for Real Estate Agents

Love your post, Jim! I couldn't agree more. I have been extremely disappointed by Zillow. What good is it to claim you are a leading real estate site when your information is inaccurate. To most of us Realtors®, our focus is on providing timely and reliable information to our clients. To act with integrity, Zillow needs to fix this or stop promoting the concept of Zestimate.

Oct 13, 2010 03:18 PM
P.J. Virgilio Jr., Realtor 408-568-6578 Selling homes in the Greater San Jose area and South through San Martin, Gilroy
Keller Williams Realty Silicon Valley - Gilroy, CA
San Juan Bautista and Hollister as well!

Jim,

If I'm not mistaken there is a disclosure on the bottom stating the inaccuracy of their reports.... I love the dartboard!

Oct 13, 2010 03:21 PM
Jim Lee, REALTOR, CRS, ABR
RE/MAX Shoreline - Portsmouth, NH
Buying or Selling? Ann & Jim are the local experts

Oh, there are all sorts of disclosures Patrick but how many buyers and sellers read them? Interesting that the "disclosure link" is all the way down at the bottom of their site and in light gray type.

I'm just saying that this information will be good to have on hand when sellers and buyers start preaching the Zestimate Gospel about value.

Oct 13, 2010 03:32 PM
Jeff Dowler, CRS
eXp Realty of California, Inc. - Carlsbad, CA
The Southern California Relocation Dude

Jim - well this is certainly not new to me. I have seem more errors, and significant ones, than I care to think about. It's interesting how much they really DO vary. Yes, they talk about their variations, etc. but does anyone actually read that? Who even notices? The problem is that it's often wrong and significantly so, and folks are being mislead.

The dartboard is a great idea.

Jeff

Oct 13, 2010 03:40 PM
John Pusa
Glendale, CA

Jim - I think, it is difficult for any source to price each and every property accurately. Excellent blog.

Oct 13, 2010 05:02 PM
Missy Caulk
Missy Caulk TEAM - Ann Arbor, MI
Savvy Realtor - Ann Arbor Real Estate

They have always encouraged consumers to use Realtors. I always check Zillow before a listing appointment because I know they have. Then I am prepared to overcome that arguement if necessary.

 

Oct 13, 2010 11:49 PM
Paula Henry
Home to Indy Team @ HomeSmart Realty Group - Avon, IN
Realtor - Indianapolis Real Estate - 317-605-4174

Great idea Missy! Maybe Zillow should hire a monkey and invest in bananas :)

Oct 13, 2010 11:55 PM
Jim Lee, REALTOR, CRS, ABR
RE/MAX Shoreline - Portsmouth, NH
Buying or Selling? Ann & Jim are the local experts

Smart move Missy; then you can accurately quote their margin of error for your area.

If you call a coin toss you're right 50% of the time statistically.

Oct 14, 2010 12:07 AM
Sara Bonert
Zillow - Atlanta, GA
Real Estate Internet Marketing

Using this chart with your clients is exactly what the accuracy chart is for and to be transparent about how accurate we are.  I think it is the perfect thing to whip out when someone says 'but Zillow says...", then move on to your professional data.  A link to the chart can indeed be found at the bottom of every page and there is link (looks like a question mark) behind the word 'Zestimate' on every page in the chart area.

Oct 14, 2010 04:25 AM
Lenn Harley
Lenn Harley, Homefinders.com, MD & VA Homes and Real Estate - Leesburg, VA
Real Estate Broker - Virginia & Maryland

I am SHOCKED, SHOCKED that Zestimates are inaccurate!!

Oct 14, 2010 11:42 AM
Brad Andersohn
Retired Executive Director of Education at eXp - Boulder Creek, CA
ActiveBrad - 707.646.1876

@Lenn - you are too funny! 

I miss seeing your comments on my posts, I had to come to Jim's post just to see what you're up to??  (Big smile) :-)

Oct 18, 2010 09:49 AM
Jim Lee, REALTOR, CRS, ABR
RE/MAX Shoreline - Portsmouth, NH
Buying or Selling? Ann & Jim are the local experts

That's cause she like me better Brad. ;)

Oct 18, 2010 01:51 PM
Brad Andersohn
Retired Executive Director of Education at eXp - Boulder Creek, CA
ActiveBrad - 707.646.1876

yep Jim, you're the cute one... I'm the smart one!!  :-))

Oct 18, 2010 02:44 PM
Brin Realty Associates Team At Bean Group
Bean Group | Brin Realty Associates - Amherst, NH
Amherst NH homes and Southern NH real estate

Hi Jim,  We had a buyer that decided to hold off buying based on Zillow's data...my guess is if it wasn't Zillow, it would have been someone else....they were like many many buyers today that are afraid and will wait until the tide has turned and some of the really good deals are gone...This market is unnerving for many.

Oct 18, 2010 11:55 PM