This did thousands of dollars in damage and no depost could ever cover this. Even the best trained dog will have an occasional accident, I know because I have a dog but its my house.

First, the guy was an insurance agent visiting cites occasionally, not an investor visiting cites daily.

He's on there frequently and will even answer questions occasionally. 

I'm in CA and I occasionally have a housemate (renting a bedroom w/ full house privileges in my home; single person only).

None of them with much control and running wild.Starting next year, the first of millions of boomers will bloat the rolls of Medicare over the next ten years.

They probably seller financed or lease optioned it to bloat comps.

It's wise to make a backup before doing upgrades because occasionally something will go wrong with an update and the site will stop working.  

I am referring to full time real estate agent with solid passive income and the occasional flip.

A retail buyer through a realtor may end up paying more in the end as they are probably not looking to low ball you or get seller financing or anything out of the customary.I am not a realtor and occasionally get a annoyed with realtors, but I get their benefit too. 

Exactly.Cap rate = 1/2 debt rate = poor investment regardless of inflation rate.Then bloat it with fees?