To qualify for a short sale the seller must also demonstrate they have a hardship that explains why they cannot pay the difference due upon the sale. 

Keep an eye on it because it demonstrates he's living on the edge and may fail to pay rent some day.I recommend you get rid of him when the lease expires.

If the sales price is $100k, a true cash buyer can show a mortgage underwriter 2 months of bank statements demonstrating the $100k has been there the whole time.

Generally, the ones you enjoy demonstrate your interest and skill in that particular area of real estate. 

Stocks have continued to demonstrate extreme volatility and risk.

The message contained pictures of each property from the street to demonstrate they were still standing.Unfortunately, this is not the same story my residents told.My real estate agent was given information by a residents that their home had a notable leak in the bathroom.

If you demonstrate that you are willing to take risk with your own skin in the game (HELOC), they are more likely to loan money to you, and at a lower interest rate than someone who has no experience. 

Demonstrate your ability to close.2.

Most folks feel comfortable with a year but there could always be circumstances where a shorter (or longer) holding period would be appropriate to demonstrate your intent.

In your case, you have two years of history to demonstrate they are worth keeping.Second, I would bump the rent but maybe keep it 10% below market.