Also, weird architectural features, like the house being extremely skinny or too few bathrooms, etc.

@Pierre Streat deal seems a little skinny on returns for Philly.

I've created my own contract that I call a skinny, it is a one page contract that says everything I need to say to control real estate. 

Do this and you WILL find a property owner that wants to sell.Be ready to do business, have everything you need at your finger tips.A skinny contract of sale...... this is a one page written in easy to understand language with only one out clause.

But it does seem a bit skinny to me.

The problem is, how does the cash buyer make money on a skinny deal like that?  

Make sure it's not too skinny!

It doesn't mean money can't be made, but the margins are skinny if there is any debt servicing involved and the risk of going negative cash-flow are real if you run into unscheduled maintenance or interest rate increases.

Now the skinny to this is that different lenders might have different rules.  

As @RichardFields stated gain some knowledge about being a landlord from BG as well as your local REIA of Real Estate Investment Association  - clubs that meet in your area that you can attend and talk with other landlords and get the skinny about the biz.