Well the asking price will most likely be determined by how much is owed to the bank on the property.
Most banks start there, or a current appraisal.
I am sure you are very capable to determine a fair market price for the home, since you have been watching it for three years.
The person who should determine your asking price is a professional Realtor with experience in foreclosures or Lender owned properties.
I would ask the Realtor you hire for reference's.
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