Big hole in roof for years. Lost cause?

[Neil Sinha]

Hello everyone.  New investor here.  There are two vacant houses on my street I'm considering for my first investments.  On one there is a large hole in the roof that's been there for years meaning there is probably significant water damage and mold inside.  Being new to this, how do you gauge what type of remediation and rehab is needed in a situation like this?  Are there ever types of damage that make a property a lost cause because they can't turn a profit?  Sorry if that's a dumb question, but don't want to get in over my head right out the gate.  Thanks for your perspective.