This could definitely affect the value of the home that you are being taxed on, so getting the county assessor's records fixed could very possibly reduce your tax bill. Here is information from their website on how to proceed:
I am sorry, but it is a typical government process that seems to discourage civilian involvement with lengthy instructions and an involved process. I do wish you the best of luck though. And if you ever have a real estate question, feel free to call/text: 719-232-4059.
Independent Broker, Struska Real Estate