It depends -- I take it this a single residential dwelling.  The landlord does have to mitigate his damages.  So, you are required to get within a certain amount of time (a very short amount of time) a detailed accounting of what happened with your security -- itemized for cleaning, repair, etc. Further, depending on your state and if liquidated damages are allowed, if any rent can be withheld for liquidated damages.Further, you need to check to see if he is attempting to mitigate damages.  Just because he decides he wants to sell doesn't mean he doesn't have to mitigate his damages.Sounds like he is taking advantage of you.  Soo, your best bet: contact your state attorney general's office.If you feel you need more direct and quick action, try www.attorneypages.com and consult with a plaintiff's (tenant's) landlord tenant law attorney.  Check his or her record at the Oklahoma State Bar.