Mold question

[Ryan Melton]

Hey guys,

I'm new and would like your input on an a opportunity I've come across. I found a house that I think can't be bought for $20,000. The ARV is around $120,000. It's filled with mold.

The previous owner obviously had a bad roof and didn't fix it. There are tarps all over the roof. The neighbor said they've been up there for a long time. It's been vacant for a year and the entire house has mold. The house is pretty decent on the outside. 

Should I go for it?  Thanks