If, the Short Sale was just resubmitted, they will start all over with the Short Sale process in most cases. If the property has only one Mortgage and the Lender is Wells Fargo, it could take up to 3 most likely. If, the Short Sale has more than one Mortgage (2 or 3 Lenders ), this could be much longer, with Wells Fargo or any Lender. As the Buyer ask your agent, how many Mortgages are on the property. You should take this into consideration, 2 or 3 Mortgages in most cases - take much more time for Approval.