How do you justify the list and sale price for a short sale? You don't. It is not up to you as the REALTOR® to justify either. The lender just needs an offer. It is then their job to look at everything, analyze the numbers, determine how much has been paid, interest earned, etc. It is your job to present the offer. It is when agents try to be all things to all people in this situation that they begin to muddy the waters. So, it is vitally important that you are the REALTOR® and nothing else.