I also agree with some of the posters above that you want just go ahead and factor in property management into your numbers when looking at cash flow (even if you just use that extra 10% to pay down principle or reinvest).

What you choose to do will be determined by your goals objectives, investment criteria, budget and experience. 

My goal (considering TVM principles) to get my money back within 5-10 years and for net present value to be better than selling and putting the cash in a conservative portfolio of stocks/bonds - which would be for me: 25% stocks/65% diversified bonds/10% cash or something of that nature yielding 3-4% after tax.My challenge still.... is the math and comparative analysis with different seller financing structuring. 

I have an objective score sheet that determines what level of risk they pose.

I did get an objective engineers report... 

The problem I have seen across the board is that most agents simply don't understand the principles of investing, what investors are looking for or how to walk a property and adequately estimate repair costs.Unfortunately, most of these skills are only acquired through adequate study and conducting your own renovations.Not sure what your business model is or how exactly you are trying to outreach to investors or builders.

The problem I have seen across the board is that most agents simply don't understand the principles of investing, what investors are looking for or how to walk a property and adequately estimate repair costs.Unfortunately, most of these skills are only acquired through adequate study and conducting your own renovations. 

I offer 10% interest only payments for a 6 month to year loan term, at the end of the loan I pay the principle back and give him an additional 5 % of his principle.

You can potentially get 10, 20 or 30 years of smart, objective advice to guide you to that offer.

I would have raised objections before the “re do” though.