Quote from @Carol Burns: I have a SFR that is not set up for handicap access.   

The 15 year option is likely be the most profitable in the long run but you run the risk of crashing and burning if you can't make up the negative cash flow at some point in the next 12 years.

She fills me in on some things that have happened. when they moved in they smelled a burning smell in both bathrooms and she said she was a licensed contractor so she checked it out. long story short... when we were prepping the place the bad prop. manager suggested to re wire the bathrooms switches and her guy did it.

I just got severely burned on my last acquisition from the seller being very sneaky.  

Got burned by a contractor but ended up finding another that is now my current business partner

Usually a property is unwanted by owner and mortgage company and they chose not to redeem it.

I've seen investors make significant upgrades and not get burned and go on their merry way.However I can also say that in many cases the neighbors know...and know the people who used to live there. 

In almost every instance - as with the couple in question who were in this house for seven years - we've been burned for that kindness, and it can get very demoralizing, especially with a legal system that's so heavily biased against landlords.

A lot of landlords have been burned.

This is the part where you have to burn both ends of the candle so you can go FI in 5-10 years.