Why do you care?  None of them are correct.  It's an industry joke.

I dont.  I dont care either.  It is nothing more than a "Guestimate" and smart home shoppers know this.  I can manipulate a listing I have on Zillow.com, if you are a premier agent you can add it yourself manually and by doing such, add value when you input it.  Again, I dont care what Zillow.com says what a property is worth anymore than I care what they say my car is worth.  It is a ballpark guess, at best.

• I dont mean to be MEAN, but Zestimate is a joke.
• You need to get your clients off of that and let them know why Zillow doesnt sell homes, show them what an expert you are and explain the benefits of using a Realtor. 

That is why we educate are buyers and sellers and keep them away from Z & T!

You can go to the listing on Zillow after you sign in and then click on "Add agent comment" under the their "Zestimate details".  I agree their data is not accurate; but perception is reality until you give them the right perspective.

Jay T from Zillow Group here. 

I assume from the listings on your Zillow profile you're referring to the listing on Rio Grande that's off by about 13% and not the listing on Rotherham that's off by 2%?

There are a couple of things you can do, Gene:

1) Ensure the information in the public records is correct. The agent or the homeowner can both change incorrect info on Zillow, but it's always best to change it at the source of the data.

2) Add an agent comment in the Zestimate Details section of the listing. There you can provide your opinion of whether the Zestimate is high or low. Some have used this section to include what an appraisal says. Some list features and improvements that the Zestimate can't pick up. Others mention comps. Point being, there is space for you to discuss why the Zestimate is off.

To be honest though, I'd be more concerned about losing potential buyers because there are only four photos. Our consumer surveys, focus group and analytics tell us that many consumers using Zillow are far more focused on the photos than anything else, including the Zestimate. They almost exclusively focus on photos, which is likely true of any listing site, not just Zillow. Many consumers understand that an estimate can be off, but they are less tolerant when it comes to property photos.

Gene:  Who cares. It's not an appraisal or anything that's remotely accurate or effects your listing.

All of us have the same problem.

I don't. My clients rarely mention a Z or T value for properties. They know those sources are often way off.

Your energy should be focused on market data that you have access to and knowledge about because you are the expert . Real estate is a a local business's and zillow stats can be wrong . If zillow was so good  then they should open up a real estate office and sell real estate. They don't and you do so don't rely on their stats 

I tell them I will give them a more uptodate CMA. I do buyer's and seller's CMAs. There are many homes out in cyberspace not even on market anymore.

I don't believe that is possible to do and it's a losing battle to fight with Zillow on issues like this.

They are one of the biggest jokes of the Internet!  A total disservice to all who own real estate. I can sell my house for 60K more than they have it showing on their inaccurate site.

I have a client that before he listed with me had posted the home as a FSBO on Zillow. He told me that he increased his zestimate by simply increasing the square footage of the home.

When you think about it square footage is very suggestive and differs depending if you are measuring the usable space or the exterior perimeter of the house. Square footage could also be increase with finished basements attics, etc. 

ZTR is a joke. I ignore what they have to say just like they ignore us.

Gene, I wouldn't even bother.  Zillow still has not master the art of whatever they're trying to do here is DC.  They are a joke.

I tell everyone to ignore NON-professional sights and I move on to proven facts

I show the buyer how I believe Zillow's computer (not even a live person) comes up with the number. In rural areas, it can be way off! The I show them real sales data. Besides, most buyers are watching more than you think they are. And they are on to Zillow!

Zillow SUCKS.  

The Zestimate is not a valuation model although to a certain extent it brought on the new wave of AVM. It is also not about precision, since big data is not about being exact, it is about correlations. It is also a data point entry and here is where Zillow gets kudos. They can track your likes and get you to enter information and then they can pull data on credit and habits like with experian who sells them the information which better allows then to design programs for REALTORS® to spend money on, and maybe have a prediction tool for when a consumer will apply for a loan to sell advertising to lenders. The be careful what you wish for is that REALTORS® in droves are supllying Zillow with fresh sold data thinking that gets them ranked higher for leads which tightens the Zestimate which is getting a less margin of error by the month. Understand that this is a media company not a real estate company who brilliantly understands the use of big data.

I would not spend the time to help Zillow. I feel they will drop off all of our radars. I tell my customer to go to my site or Realtor.com

Have your client claim their house and then click on update zestimate.  Fill in all the improvments done to the house. Make sure all the details are correct such as air condition, floors, rooms etc.. 

Good luck 

If you have a moment, I recently wrote a blog post about Fannie Mae's Collateral Underwriter Tool but in it I detailed out a very telling experience I recently had with two of my listings and Zillow's Zestimates.  Here's the link if you are so inclined. 

http://activerain.com/blogsview/4679391/will-fannie-mae-s-new-tool-sink-your-southern-nh-home-sale-

 http://actvra.in/4FQz

Zillow has a lot of followers. They understand that it may not be accurate, but they follow it anyway.

We just have to use it as an opportunity to show how expert we are in our markets, and why our expertise has value. It is something that we can talk about.

Gene, check on the homes in your area that sold 2 months ago and you will see that 'Z' is still incorrect.

You need to keep your listings away from the dark side.

Two years from now all your information will be available to anybody to support their fsbo effort and you are left out entirely. 

Your MLS, your broker, your franchise have colluded to completely undermine the real estate professional. Keep your listings away from the dark side.

The answer to your question is to pump up the values of the other houses on the street. Be bold, it's an advertising site not a real estate web site so don't give it more relevance than it is worth. 

Gene Riemenschneider I've been round and round with Z on this issue since they began. As I understand it unless it's your own home I don't think there's much you can do. 

My home has always been listed well below the area's market value and I've told them this for years but it only falls on deaf ears. They could care less. 

The only reason for Z's existence is to make money using whatever factors designed to steer consumers to their sites. Inflated valuations based upon BPO's or simply inaccurate valuations have been the norm and not the reality IMO. Personally, I'm not a fan of Z, so, as many have already stated, who cares? If Z cared about their business model, they would have paid a fee to the listing Agent/Broker for using their IP on their sites.

make sure all the facts are right.  I added a bath, hardwood flooring and that type of thing and one of mine popped up about $20,000.