There was droppings, rotten food, and garbage all over the floor/tables.

You will get calls about stolen food, personal grips, etc.  

You are feeding wild dogs and then ask why they keep gathering around your property demanding more food.

The loan requires a safety inspection (and often required repairs) as well as that the property appraise and they generally make for a slower closing. 

And breaking it into multiple transactions like @Jacqueline Gardiner said will let you maximize sales price.This hybrid approach (having some free and clear and having others leveraged) gives you a lot of safety net as the paid off properties are out of harms way from debt risk. 

Or they have to add kitchen and food to make their model work.6. 

The 2 exits from a bedroom are a safety concern.  

There was garbage all over, expired food left out, a nail polish stain in the master bedroom carpet, coloring on the walls, etc.

Needed a complete renovation after uncovering safety and structural issues during demo.

Purchase price: $59,000 Cash invested: $75,000 Sale price: $194,500 Needed a complete renovation after uncovering safety and structural issues during demo.