The boundaries are defined and there already is a fence around 90% of the property. The problem is more it was purchased as a single property, but legally it is registered as 5 separate parcels. The realtors, Zillow, etc find information on the house and lot it sits on and don't include the other 4 parcels in the price.I think part of your trouble might be your fuzzy boundaries. If you have conflicts with county/city records and unknown lot lines it makes it difficult to sell. Buyers want to know where the fence lines should run.