Ad Valorem
Simply put the term “Ad Valorem" is Latin for “according to value”.
Ad valorem taxes are the basis of the property tax codes and valuations. In most cases property taxes are based on the market value, the Fair and Equal value, or the Capped value. Most, if not all, local tax codes and tables requires that all property be appraised on a Market value then compared to the Fair and Equal value of similar properties. The lower of the two then defines the Appraised or Taxable Value.
As a property tax payer, you should know and comprehend that you indeed do have the right to challenge your assessment. Dealing with bureaucratic government agencies can be both time consuming and frustrating. Your choices depend on your preparation, presentation as well as financial skills and resources. If you feel that your property tax assessment or assessments are high and / or high and unfair then you have several options. You can conduct the appeal process yourself - that is if you are both qualified and as well have the time and presentation skills. Alternatively if a professional is available in your area, and you have the financial resources it may be better and preferred to contact a professional property tax service that provides for the services of property tax appeals.
http://www.realtytaxconsultant.com/