Hi there Deemer,
I'm Andrew, a community manager here in Trulia Voices, and so I can speak on Trulia's behalf.
Don and Oggi are quite right. We rely on listing information from our real estate professional partners including MLS and Tax Records.
However, unlike those other services, we are dedicated to make it as easy and simple as possible for the people who know the home best to update our information; you.
It takes a few moments to update your Home Facts, and also gives you the opportunity to update the home with facts and tidbits that may have been missed.
If the home in question is on the market, go to that home on our page and click "More", then "Report an error"
If the home is off the market, just click "Claim This Home", then "Edit Home Details"
Let me know if I can help out more!