Is it possible to fix foundations?

[Mario F.]

Hello, I'm looking into purchasing a duplex in north east LA. The price is low for the amazing location which is close to downtown (cypress park) and in an up and coming neighborhood. I had a contractor look at this property today and said the foundation needs about 20k to fix it. My brother tells me it's impossible to fix foundations so don't even bother,. It's tough to let this deal go but I have to admit, it sounds like it'll be massive project. Probably around 200k to fix it all up. The list price is 500k for two 1 bed 1 bath units.  Does this sound like a deal I should run from?  

Here is the address you can see the photos:  426 isabel st.  

The duplex is propped up on a hill. Has a nice view but a unique situation foundation wise. The surrounding area along the edges of the frame is OK, according to the contractor but the middle needs to be redone. Any thoughts?