Install internet and exterior video cams.

(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 am interesting in knowing what are some safeguards if any investor has when using a master lease as a financing option.

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.