Unless the buyer comes to you without even listing/marketing and you were renting or attempting to rent these houses, there is clear intent to built to sale. 

OP has not  stated lady is dirty, loud, boisterous bong smoking party animal.I would be driven out if my neighbor was a dirty, loud, boisterous bong smoking party animal and repeated attempts with my landlord were unsuccessful with getting the problem fixed.

Never once did I attempt to steal the deal.

If this is possible what would be the best way to reach out to the owners (mailing, attempt to call them etc.)?

Iowa law states landlords must attempt to mitigate damages.

Attempt to find a new tenant ASAP.

Hi all,I'm considering moving to another city for my first attempt at a fix-n-flip.

I’m not going to attempt anything other than being the owner.

However, I understand your concern and am not attempting to dissuade you from obtaining additional opinions.

I think you're right (enacted in 2013 and went into affect 2014), but too close for comfort for me.