Multiple people including myself have tried to caution him of the the true costs but he's been repeatedly dismissive and has made it clear we give him motivation and he wants to prove us all wrong (whatever that means). 

He is great with investors and can find deals that cash flow much easier, including some off market stuff.

I am a power user for Zoho for a number of reasons including following:Zoho CRM, truly the beast out there.

I was reading up about it, and saw that the cons of oil heating include needing to top up the oil supply, lower efficiency (than gas and electric), and potential leaking of tanks leading to environmental issues.Is anyone familiar with oil heated homes?

Here's what you need to know about qualifying and managing costs, including realtor fees and other expenses.Why Germany?

I think you forgot to include the question.

I know that interest on the acquisition loan can be included in the cost basis since it’s inventory.

The deal sounded good at the beginning but thought it included his fee and it didn't so he's tacking on his 20% on every bill. 

In total, including money lost from rent, legal fees, and repairs, the situation cost almost $30k.

So, there is even more risk.The things that you can do, include being properly capitalized, not be greedy, (in whichever way that may be defined in the county you are buying), know solicitation laws, know Dodd-Frank, the Consumer Protection Act, the S.A.F.E.