That estimation would disappear if your house was listed for sale with a real estate agent. The active listing info replaces all of the Tulia-provided content. I'm pretty sure Zillow's Zestimate (which is equally stupid and unreliable) still shows up on active listings but Trulia's does not.
For what it's worth, the only people who care about online real estate valuation estimates are *sellers* whose online estimates are grossly higher than the real-world market value and refuse to believe that a human who works in the local real estate market every day could possibly be smarter than a computer that is trying to claim their house is precious, golden snowflake.
"But what do you mean we should list my house at $250,000? Zillow says it's worth $425,000!"... more
Hi Kel. If your home is listed for sale by an agent, then there are 2 ways to change this information. Both require your agent's assistance.
1) Your agent can update the information in the local Multiple Listing Service which will auto-populate the changes to Trulia within 24-72 hours.
2) Your agent can manually make the changes in Trulia - but updating the MLS is preferred because it will correct all search engines that gather info from this source.
If your home is not listed currently, then any information is from archived sources only.