I've been able to confirm that the information you reported for your property is correct via your county appraiser's website. I've thus asked our engineers to update this data and to notify our data provider of the errors in the information they've sent to us.
Our public records info is only refreshed once per week so it will be several days before these changes update on our site. Thank you for your patience in the meantime and please let us know if you have any other concerns or questions.
From there you will want to create a Trulia account and manually go in and change the info. You should be able to do so. If you are still unable or have questions please email or reply and we can try to noodle through---