The first level of an appeal is the informal hearing
. You are notified at least 10 days in advance of the date of the hearing. Once you start this appeal, be sure to pursue it to your satisfaction. If you drop it, you can not appeal later on the same property in the same tax year.
The informal hearing is a meeting with an appraiser that lasts about 20 minutes. You can designate someone to represent you, if you wish, by filing a Declaration of Representation.