Howdy, I have been in the game for about 10 years now and have mid seven figures of real estate assets. 

Communicate expectations upfront—because once they start double-parking or treating the place like a frat house, it’s game over.Cameras, Cameras EverywhereYou’d think adults wouldn’t steal each other’s food, right?

I'd start small and just try to learn the game of flipping. 

Keep the risk in check so you will not be taken out of the game. 

once this stuff gets on BP and its monster google search results IE goes to the top of the page its game over..

@Stuart UdisAll great comments, seems like putting skin in the game will be a reassuring factor for any potential investors.

The seller feels showing the invoice was a favor, it weird situation i am in, has anybody face such situation?

Since most people who are not actively seeking a sale are not motivated to sell at anything other than a top of the line price, this is going to be a numbers game of x thousands of contacts for every potentially doable deal.  

The brother and his son had been living in the house, free of charge, for years, and were gaming the system.

It could take years of sacrifice and saving to get into this game and most people don't want to wait that long.