Could this be a deal or not?

[Jamarr Lee]

Hello BP family, long time since I been on here. I believe I have a house on the line but not quite sure just yet trying to do my due diligence. This property sits on 0.7 acres it's only 672 sqft with 2bd and 1ba. This is a fsbo and the guy said he is pretty firm on his price for 70k but I'm still gonna try to negotiate with him. I ran my comps for the numbers and the closest property sold for 115k in November of 2016; with the same amount of bdrms and bath sitting on 0 8 acres but slightly bigger with 784 sqft. Does this sound like it could be a deal just want to make sure and not just jump on it because I'm anxious to get my 1st deal? Mind you he claims you can build a 2nd house on it.