If you're going to do it alone, make sure you your due diligence: estoppels, inspection, review, consult with a local attorney familiar with the local regulations, etc. and good luck.

Quote from @Chris Kittle: Good morning,I am closing in on my first multi-unit apartment deal. 

So the seller cannot go get another loan for a car, house, apartment, etc. so it damages their credit by stretching them too thin.Am I missing something? 

When was your last inspection?

As a MF agent who spends a large amount of time calling apartment owners (or rather, numbers purporting to be apartment owners), please believe me that reaching out to random run down buildings owners is unlikely to get you any deals.

Hey Chris, Thanks, the building inspection went well.

Are inspections needed before and after the work?

Quote from @Josh Otero: Hi BP community, I know you've got some crazy tenant stories and I want to hear it.I'll go first:1) I was managing a 5 story apartment building and a dog fell off the 4th floor balcony because of the owner not paying attention.

Inspect what you expect.

Just ensure to complete necessary due diligence - this can include, but is not limited to, title search, property inspection, appraisal and/or survey.