If he is interested in helping you out maybe he will give you a good deal but from a pure financial side it's tough.  

That is purely philosophical though, on to the meat and potatoes of your process, if you are in construction, great, if you are not, get educated ASAP on residential construction terminology.

That's what I'm doing right now while I look for my first pure investment property.

While it will help the homeowner, I'm interested in it purely for the rent (with a tenant who wants his house back) and potential profit.Would you do it again?

My advice is to start listening to the BP Podcasts, these are pure gold!  

We got started doing pure flip and sell until we could afford to hold onto a few (this was possible with savings + a W2 job to back up my funding).  

Alexander is this based purely off your observation from MLS listings?

Even if there pure investments they are alone gthe same "guidelines".

This allows you to live free, build equity and  use you living expense to pay for  for your pure rental at a higher cost of 20%

These are pure investment properties.