Need opinion on photo of structual/foundation issue....

[Jeremy Jackson]

I just came across this property.  Great area and house house great potential.  Then I found this.  I haven't been inside yet.  Would like some advice before I proceed.  This house is in the midwest.  What do you think?  How extensive is this sort of repair?  How costly?

[Bill Gulley]

IMO, it appears that the water from the down spout may not be diverted away from the house, flowing to the left to the corner and allowing the foundation to settle toward the left.

I'd check the soil! 

That may not need to be "jacked" look up foundation jacking or mud jacking.

"Point tucking" might cover the appearance issue and pass an inspection as the brick course lines aren't that far off. If that is brick over frame, you may be able to lift, slowly over time, that corner bringing the left side up. "duck pointing" will likely get you daffy duck, funny typo. Point tucking can be a DIY job on that one.

But, it appears to me, my first guess, is that the drainage from the down spout is the problem, put a connection on the end and divert the water further away from the foundation! 

I wouldn't let that get in the way of a good deal, just get an estimate and point tucking (filling with concrete) might do. Good luck :)