Since Trulia is not an actual "licensed" brokerage, their data can unfortunately be quite inaccurate sometimes, since they do not have direct MLS access.
If you happen to be the owner of this property and wish to have the records updated on Trulia, you do have the option of clicking the "Edit Home Facts" button (which displays slightly underneath the address on the property page). You will be required to enter your email address, and re-confirm your claim to ownership. After this is completed, you can actually make some edits to the data displayed, including square footage, etc.
I hope this helps, and please don't hesitate to contact me for any further assistance. Thanks!
Diane Briggs, REALTORÂ®