In Kentucky, if a property is classified as a farm, then the land can only be valued, for property tax purposes, at the agricultural value of that land. The "farm" has to be at least 10 acres, and would have to be zoned Ag / Residential or Ag / Urban in some areas. In some rural areas of Kentucky there is little or no zoning. In the Louisville area, there will be. There are also some incentives for various crops and animals through the Dept. of Agriculture. Good luck!