An assessment appeal is not a complaint about higher taxes. It is an attempt to prove your property's estimated market value is either inaccurate or unfair. You may appeal if you can prove at least one of 3 things:
Items affecting value are incorrect on your property record. Examples: You have 1 bath, not 2. You have a carport, not a garage. Your home has 1,600, not 2,000 square feet.
The estimated market value is too high. You have evidence similar properties have sold for less than the estimated market value of your property.
The estimated market value of your property is accurate, but inequitable, because it is higher than the estimated value of similar properties.