They may be able to apply enough pressure to the landlord to remedy the situation in a timely manner.

Another covenant not with title: The property shall conform to all applicable zoning and building regulations imposed by proper jurisdictions at the time of settlement as a residential property.What happens if the seller backs out, any remedies?

The water used to extinguish the fire can cause more damage than the fire itself especially if the structure is not immediately remediated properly.Fire restoration- make sure anything smoke damaged that is not burnt be sealed with an appropriate smoke seal product.

Brown University and Johnson & Wales are continuing to buy property and the state is has put a lot of effort on remediation of the providence harbor (Building waterfront condo's).

But I'm looking into an idea that may remedy that problem.

I'm looking for an investor friendly mold remediation contractor in the western suburbs of Chicago ( Naperville area). 

When my wife and I purchased our house, we hired an independent mold consultant (not a remediator) to come in, analyze, and take some samples which were then sent to a lab.

Her balance of ethics and investor knowledge presents good value and minimizes risk.

Landlord's remedies.

Account Closed  not sure were you are learning your real estate but your advice is not correct. a note holder cannot withhold payoff demand if they do as everyone above who is quite experienced have said there is remedies and damages that can be assessed..just a pissed off note holder who does not understand they do not control the deal anymore they are simply a creditor.What the OP may find out though with fee's and such there may need to be some cash brought to the deal to close  IE Seller will need to bring in some money... and Sellers usually don't have it.. so you will decide if you will pay a little  more for this deal.