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How to check Zillow's own accuracy rating for your area

By
Real Estate Agent with Progressive Realty (Boise Idaho) www.Progressive-Realty.info DB-17066

Lot's has been written over the years about the accuracy of their Zestimates.  I am a Realtor in Boise, Idaho and there values in our market are not accurate at all.  But don't take my word for it, here is exactly what Zillow says about their accuracy in Boise, Idaho.

(redacted my own screenshot of their website) but click on Zestimates on the lower left of their first page of their website.

The next page that displays shows: 

(redacted again - but see how they define their estimates and admit their results vary depending on access to available data)

When you look at their own data for the state of Idaho, you will see:

(redaction #3) showing they don't even give themselves a margin of error since they don't get enough data here in Idaho.

If the estimates were fairly accurate, wouldn't they call them Zaccurates? 

Since Idaho is one of 12 Non-disclosure states in which sales data is not available to the general public, websites that offer automated valuation models (AVM's) are not accurate at all. They don't claim to be accurate and never will be since houses are not a commodity that is sold by the square foot.  I think of each home as a unique piece of art.  The lot it sits on is it's tapestry.  Some art looks like it was created by a kindergarten student while others by true artists who have mastered putting together all the elements with style and elegance.

If you would like a personal assessment of what your property is worth in the Idaho, I would be glad to offer that service completely free of charge.  I also do assessments for people who are trying to figure how much to fix up their home before putting it up for sale in order to maximize their potential return on investment.

Call Jim Paulson, owner and broker of Progressive Realty Corporation at 208-573-0471 today for your free market analysis!  Put my 30 years of licensed Idaho real estate experience to work for you. 

Ed Silva, 203-206-0754
Mapleridge Realty, CT 203-206-0754 - Waterbury, CT
Central CT Real Estate Broker Serving all equally

Zillow's eye in the sky cannot see what's under the roof and that skews all their Zestimates.  Besides they aren't in it for the real estate knowledge it's for the numbers of contacts they can sell to anxious realtors

Jan 16, 2021 06:06 PM
Jim Paulson

Ed Silva agreed.  So many try to treat real estate as a commodity and it is not.

Jan 17, 2021 01:21 PM
Endre Barath, Jr.
Berkshire Hathaway HomeServices California Properties - Beverly Hills, CA
Realtor - Los Angeles Home Sales 310.486.1002

Funny you should write this post Jim in my area 20% off is not unusual... and that is what they admit to.... Endre

Jan 16, 2021 09:58 PM
Jim Paulson

Endre Barath, Jr. people don't realize that being on average 20% off is that sometimes they are 20% high and sometimes 20% low.  So on a $1 million dollar home, the range can be $800k - $1.2 million which is actually a 40% variance range. But that is ok, I can sell it myself and save maybe 1-6%. LOL

Jan 17, 2021 01:23 PM
Richard Weeks
Dallas, TX
REALTOR®, Broker

Great information, thanks for sharing.  I hope you have a great day.

Jan 17, 2021 01:43 AM
Michael J. Perry
KW Elite - Lancaster, PA
Lancaster, PA Relo Specialist

I was at a Raincamp in Philly years ago and Spencer told us they reserve the right to be within 20% accuracy.

Jan 17, 2021 04:57 AM
Jim Paulson

Michael J. Perry I miss the RainCamps.  I wonder what people would think if they bought their stocks/bonds, airline tickets, etc. and when you showed up to pay they were within that 20% margin of error?

Jan 17, 2021 01:25 PM
Joe Daniels, Broker, Appraise
Personal Service Realty - Leesburg, FL

Any time I get a question about Zestimates I always point out Zillow CEO ( at the time) Spencer Rascoff,s Seattle home sale. Zestimate $1.75 million, sold for  $1.05 million. Only off by 40% on the bosses home.

Jan 17, 2021 11:55 AM
Jim Paulson

Joe Daniels, Broker, Appraiser, Realtor(R), I have made the same point/argument.  I see that you are also an appraiser.  I have also pointed out that if Zillow was even close, why do banks still require a licensed appraiser to review the interior of the property (in most cases) instead of using an online estimate if the buyer is putting less than 20% on a purchase?

Jan 17, 2021 01:28 PM
Carol Williams
Although I'm retired, I love sharing my knowledge and learning from other real estate industry professionals. - Wenatchee, WA
Retired Agent / Broker / Prop. Mgr, Wenatchee, WA

Hi Jim,
I don't know how anyone can believe those algorithm estimates. So many variables from home to home.  And, yet, they do! 

Jan 22, 2021 05:29 AM
Jim Paulson

Carol Williams the same people think price per square foot is a great tool. 

Jan 22, 2021 09:31 AM
Wayne Martin
Wayne M Martin - Chicago, IL
Real Estate Broker - Retired

Good morning Jim. I refer to Zillow as misinformation. Seems to be a popular word thes days. Enjoy your day!

Jan 23, 2021 05:47 AM
Grant Schneider
Performance Development Strategies - Armonk, NY
Your Coach Helping You Create Successful Outcomes

Good morning Jim Paulson -  I look at a cul du sac in my neighborhood that has not not had any recent sales.  The values make absolutely no sense to me.

Jan 23, 2021 05:56 AM
Jim Paulson

Grant Schneider if they claimed them to be accurate, they would name their service Zaccurate. ;)

Jan 23, 2021 12:38 PM
Kat Palmiotti
eXp Commercial, Referral Divison - Kalispell, MT
Helping your Montana dreams take root

Here too (in Montana). We're a non-disclosure state and any valuation tools are wrong.

Jan 23, 2021 06:41 AM
Jim Paulson

It will be interesting to see what happens as Zillow joins more MLS's as a real estate company and get more data.  Even if you have five Realtors do a CMA after actually being in the home, the valuations will vary greatly.

Jan 23, 2021 12:40 PM
CANDACE (Candy) STEVENS, EA
Number Cruncher LLC - Overton, NV
Helping Taxpayers Resolve IRS problems

I had no idea Idaho is a non-disclosure state, I lived there for 30 years.

Thank you for sharing.

Jan 23, 2021 09:29 AM
Jim Paulson

Yes, and we are fighting to keep it that way.

Jan 23, 2021 12:42 PM
Hannah Williams
HomeStarr Realty - Philadelphia, PA
Expertise NE Philadelphia & Bucks 215-820-3376

Hard to believe anyone could estimate the value Jim Paulson without seeing the inside of a house. Hope to see you on Tuesday at our Zoom meeting. So glad Carol Williams  featured this post as I missed it 

Jan 23, 2021 10:03 AM
Jim Paulson

Hannah Williams I didn't realized it had been featured.  Thanks for letting me know.  I plan to make the Tuesday Zoom call.  I enjoy seeing them and "my peeps".

Jan 23, 2021 12:44 PM
Anna "Banana" Kruchten
HomeSmart Real Estate - Phoenix, AZ
602-380-4886

Hi Jim, I like the idea of non-disclosure state. Wish AZ was one of em.  Z has been off in my area for years, upwards to 20 % or more and that could be either way. Like you said.....who would be aok with that answer with stock broker!

Jan 23, 2021 12:04 PM
Anna "Banana" Kruchten

Good choice Jim!  A good friend of mine fired his guy awhileback as his portfolio was going down when holy smokes it should have been taking off like a rocket ship.

Jan 23, 2021 12:48 PM
Jim Paulson

Anna Banana Kruchten CRS CRB, Phoenix Broker I actually fired a stock broker many years ago since he kept suggesting I do various investment strategies and buy stocks that didn't make sense to me.  I asked him to show me his portfollio after redacting the # of shares and values to see if he practiced what he was preaching.  He wouldn't so I fired him on the spot. :)

Jan 23, 2021 12:46 PM
Jan Green - Scottsdale, AZ

You guys are on a roll so I figured I'd chime in!  Fired my stockbroker, even though I'd known her for over 36 years. I asked her to research in investing in sustainable companies.  After a week I called her back, nothing.  I switched to a managed fund that researches and invests in transparent companies who have switched to much like Black Rock principals, investing in companies that work to lower their carbon footprint.  Walla - beating the S & P now! 

Feb 13, 2021 09:09 AM
Dorie Dillard Austin TX
Coldwell Banker Realty ~ 512.750.6899 - Austin, TX
NW Austin ~ Canyon Creek and Spicewood/Balcones

Good afternoon Jim Paulson,

I'm glad that Carol Williams featured your post in her Second Chance Saturday Series. Zillow is off at least 20% in our area ..it always amazes me how many go to Zillow when they are so inaccurate.

Jan 23, 2021 01:45 PM
Jim Paulson

They made it easy and quick. I would rather be Z accurate one.

Jan 25, 2021 10:35 AM
Jeff Dowler, CRS
eXp Realty of California, Inc. - Carlsbad, CA
The Southern California Relocation Dude

Hi Jim:

I did an analysis a few years ago on the Zestimates and the reality in my town - the results (inaccuracies) were pretty shocking. And who actually goes to read their explanation of how these are calculated and the expectations - making any decision on a Zestimate is not a savvy decision, for buyers OR sellers.

Jeff

Jan 24, 2021 07:37 PM
Jim Paulson

If you know they "believe" in online values, just pull up some that have sold recently in their neighborhood and show the disparity. Pull up their home and see if they agree.  Nothing dispels disbelief faster than showing facts and the route to collaborate them.

Jan 25, 2021 10:39 AM
Michael Jacobs
Pasadena, CA
Pasadena And Southern California 818.516.4393

Hello Jim - the subject of accuracy and their zestimates may be a case study of real estate hyperbole.   

Jan 28, 2021 05:32 AM
Mary Hutchison, SRES, ABR
Better Homes and Gardens Real Estate-Kansas City Homes - Kansas City, MO
Experienced Agent in Kansas City Metro area

Agents often hear "Zillow says my house is worth X"  and I want to say--well how accurate do you think that is?  Zillow is buying houses now and sellers may be tempted but nothing beats a real human agent with lots of experience that can give you reasons WHY and HOW they come up with a suggested price range.

Jan 28, 2021 12:27 PM
Jan Green - Scottsdale, AZ
Value Added Service, 602-620-2699 - Scottsdale, AZ
HomeSmart Elite Group, REALTOR®, EcoBroker, GREEN

That's crazy data for your housing market.  When someone tells me they've used Zillow to calculate what their home is worth, the hair stands up on my neck!  

Jan 29, 2021 05:14 PM