usually bank lelong means you didn't pay the house many months. the bank reposes the property. your credit score is gone case already, cannot take loan anymore and blacklisted by the bank. then they will lelong the unit. if u owe 900k, and the lelong only sold for 800k, you still owe the bank 100k. you need to go to the bank and talk to them about repayment plan. during all this time you can't take any new loan because credit score is basically gone case.