Even the most experienced rehabbers end up having surprises it’s just part of the deal.  

So I am finally venturing into home rehab and re-sell this year, besides the obvious financial analysis (ROI, ARV, rehab costs etc.) what are a good list of "unexpected" issues to be aware of to improve my due diligence?

It's also the only guarantee you won't have any future surprises that will cost you a whole lot more than a grand after he passes.Have you asked him what will happen to his 50% share when God forbid he does pass?

Unexpected and sudden turnover

Check for lawsuits (you'd be surprised how many gurus spend more time in court that real estate.

You'd be surprised who comes into your life when your goal is helping others find and invest in great deals.

You'd be surprised how much stuff people say that's self-incriminating when they don't realize they are being recorded.

I can comfortably process one at a time but I also want to make sure I can safely handle those surprise expenses like a new roof or maybe not having a tenant for a month or two.I'd love to reach out and pick your brain sometime. 

And you may be surprised to find that the lower rent isn't actually below market for the place.

I was surprised to find out even hard money lenders want 20% down- how do I get started??