And, even if he has real estate clients, doing a tax return doesn't really educate one.

One question I have is that I have heard that DIY cost segregations tend to be more conservative, meaning a full engineered study would likely return more in deductions.  

If your goal is appreciation, you'll find markets that have very little cash flow (if any), and you won't realize your return until much later down the road when cash flow catches up or you sell the property.There are probably thousands of markets to invest in.

If that is the case then that is considered cost of doing business and I would advise that should be calculated in your costs/returns you provide to the investor.IF you are referring to the investor who is the borrower - then I would have included that cost in the loan agreement.

there's people out there who will fund downpayments for equity in the deal or a preferred return. hit up local meetups and facebook groups and have some conversations

You put a 3.5% down payment on a house that goes up 7% in 12 months you just made a 200% return that didn't take any large amount of skill or time.

The calculator is a LIVE excel with multiple tabs and all of them are interconnected, you may mess up a formula and you will see awesome returns inaccurately.

The same issue happened, we would get pressured to make over 150 dials a day, yet us AQ specialists got nothing in return, and it's been nearly a year and i haven't gotten paid by either company.

That is a dollar for dollar return on principal paydown.

Quote from @David Hori: I've been vetting gurus to determine where an investment would return the greatest ROI.