Cash buyers normally relieve you of headaches and distress, vs maximizing your profits.  

At appraisal it was worth $500K and it is in a neighborhood where homes that are on a third the size of the lot are going for $800K.What's the best way to get a loan, about $150K, to rehab his house and get it ready to sell. as mentioned, I recommend getting a loan to rehab the property.

I think the best thing to do would be to find a good-hearted person with a lot of experience and pick their brain.

This 4 Bedroom, 2 Full Bath Home Features Almost 1,700 Sq Ft of Living Space.

This will open up your options a lot more. 

Other than that, you will need to network with a lot of people to find seller finance deals.

Included was two rentals homes and a rental lot.

Also do an inspection of the unit for yourself. 

Along with the benefits of time with family and helping others. 

Of course my nosey self had to go look up your rental property.