In some instances, the acquisition of a portion of a tract of land will cause the remaining property to be left in two or more parts. This may be because of a special feature in the design of the highway or because the original tract was already divided into two or more parts by existing roads but is being used as one property.

If the property is already divided before the acquisition, this fact may indicate a highest and best use, both before and after the acquisition, as separate tracts indicating no loss in value due to additional selling expenses. The fact that the parts are being used together in the operation of one business does not mean that the parts have plottage value, unless the value of each part is greater when used with the other parts than its value would be as a separate tract with no relationship to any other property.