A few that I think of instantly are: - Why is it vacant/Are there soil issues/Is there anything hazardous about the property itself/how long would rehab take and the property starts to produce income, are there large outstanding liens/easements on the property? 

Soil type is C1 (sandy,clay,loam).

In order to set the house on a good foundation, we remove the top layer of soil to reach hard pan, the solid, non-loamy layer.

Also be aware of any chemical hazards, such as the remnants of a meth lab or leaking oil/chemicals in the soil.

I have asked a lawn care company about sodding it just to get ideas and it will be very costly and they also cannot guarantee that the sod will last due to 1) large trees causing shade and sucking all of the moisture out of the ground and 2) poor soil in that area.

If so need to slope soil away from foundation.

I don't need anything bringing the house down when I can do something as simple as taking the struts off AS LONG AS THERE IS A SOLID WINDOW UNDERNEATH. 

You can put an underpayment underneath it if you want.  

One of the things to be certain you address is contamination of soil and water. 

The plumbing underneath the cabinets wasn't hooked up properly.