The landlord will be lucky to ONLY eat about 3 months worth of "expenditures" postponing any potential sale until after the tenant is out and the winter is over.... 

You'd be surprised how many don't even know, because of all the previous postponements.

I would look to 1031 exchange it to postpone paying any taxes on the gain.Good luck

Currently appreciated RE can be exchanged via 1031 to postpone paying cap gains.  

Some of the reasons: state law requires a minimum waiting period of delinquency before the foreclosure can be filed; to file, state laws require certain consumer notices be sent to the delinquent borrower, and some time is allotted to that; sheriff sales might only be allowed in one day per month in some counties; court system can get backed up, so that a postponement in one month can mean that the next hearing date is months later, missing many possible sheriff sale dates; borrowers will use bankruptcy; borrowers will attempt loan modifications and there is now law that prohibits "dual tracking" (bank can't negotiate a loan mod and simultaneously pursue sheriff sale).  

Have the seller call the bank and tell them they have sn offer and would like a 30-day postponement.

The house that I'm interested in got postponed to October so it isn't going to be a problem.

Public notice fees, attorney fees, auctioneer fees, auctioneer postponement fees, advertising fees - lets say 10-15K depending.

If you need more time you should be able to postpone the sale, gather more data, and move forward in the way you dream best.  

I don’t know the exact legalities in Florida but I would think it would be handled two ways, option one the court says it’s the buyers issue because he didn’t postpone closing until the issue was resolved, option two the court rules that’s you knew the issue and the buyer took your word for what the repairs are needed to fix the issue which unfortunately didn’t work, so you need to cover the cost of repairs.