bi-level layout homes

[Gp G.]

Hi,

I saw bi-level layout SFH home recently to purchase. I was not very comfortable. But price is decent almost 30k less than median home price in that area . Does tenants rent bi-level layout homes

How bi-level different than split level  layout homes. 

What is normal layout home called.

I see deck with steps in the front of house in bad shape. Also back of house another deck in much more bad shape.

 Also I saw like back wall which supports roof resting on the wooden pillars and beans near broken deck with some screws.

Foundation is slab though. I am not sure why back deck resting on wooden pillars and beams,

Please advise