Rents are strong and vacancy low.The obvious concern for these markets is that the lack of population growth may worsen and actually begin shrinking.  

I share your longer-term concern about anything even near a beach as ocean levels are rising and there is evidence that hurricanes are strengthening.  

Call everyone back whether they leave a message or not

Also, as far as the loan is concerned.... you either have to have a sweet rehab loan, or some other way to buy the property.  3  Holding costs:  Not the biggest item on your list, but not nothing. 

(I Really wanted to say to Leave the keys in it at a gas station and ...you get the idea but since you are backwards that would not work. 

11.Are there any environmental concerns?

And after the 1 year owner occupy requirement, I can rent out the other half and the numbers work (but only with 2 tenants so vacancy rate is a concern).

A day after my landlord told me I have to leave in a text message.

That’s not a problem if you leave it alone or cover it with more siding but if you have to tear it down you’ll pay a premium for asbestos.  

There are plenty of real estate software/education scams out there so I felt like this was a very valid concern.