Or do they live in the grey market where they are often snapped up before hitting real estate listing? 

Initially, I figured I would try to jack it, brace and put a post and beam foundation in it, but life got complicated (as it often does) and I had not only no money but no time.I sold it on contract to someone who took 5+ years to pay it off.  

Aside from maxing out your rentable square footage, I would look at the condition of the kitchen and bathrooms since those often add the most value. 

Often two bookkeepers will not do everything the exact same way, so I am sure even a great bookkeeper will take some time to learn your system. 

A previous landlord really has no reason to lie, and you may get a more accurate picture of what kind of tenant the applicant would be for you. 

She is likely not the type of tenant you will want due to her attitude.

Hold them as often as possible.

They will often be between 50 to 60% when roof, windows, water heaters, heating and air,etc. starts reaching end of life expectancy and has to be repaired to extend shelf life or fully replaced.Many times some brokers do a ( if buyers don't ask then don't tell ) kind of thing to get stuff closed and make their money.

A place you know very well, often where you grew up3.

How often are your properties inspected?