Two foundations for one house

[William C.]

I am interested in buying a house but just found out it has two different foundations under the house.  The majority of the house is on a pier beam foundation, while two small areas have slab foundation.  The result is there is a 2 feet difference between the lower areas and the majority of the house, and you will have to go up 3 steps to the higher part of the house.

I wonder if this will create any resale problems and what this implies structure wise.  The property is in a rural area.  Any advice is greatly appreciated!