(Again almost certainly as described, but we are interpreting over the internet so I am adding this consideration).If this is as described, I think it may be worth considering pursuing this to the fullest extent of the law both criminally and civilly (civil side with a good attorney on contingency). 

Does the association provide water, electricity, high speed internet, cable, etc?

Send your son a s/f from a random internet stranger.

Taking legal advice from the Internet is a questionable business practice.  

Yes, it's also quite likely the internet lender is just throwing spaghetti at the wall to see what sticks.

Make sure your insurance is up to date and revel in the "rent for empty property"Not legal advice just the ramblings of some dolt on the internet!

I have been finding it more difficult to source deals through the mls and beginning to move my strategy elsewhere (direct mail, internet ads, etc). 

I am new to the site and thinking about upgrading, but like so many things on the internet at 65 I am a bit confused. 

He just didn't understand the market, went on the unprofessional advice of our family members, and ended up with a bunch of rentals far from job centers and unable to use internet at the time to manage it. therefore, vacant. 

I will tell some major things that will allow you to be safe and productive.Beware off all communication on the Internet, especially if you don't know them.