We are really good at review - we typically have internal accounting departments at our clients looking at our work and other big 4 firms looking at our work (sometimes the partners in the deal are big pension funds and institutional investors who all seem to use big 4).

Typical profit for turnkey provider 100K property is at least 20 - 30k  minimum.

I understand that with a typical FHA loan, only up to a 4 Br can be purchased though in this posting it says two building are "included in a package".

The typical total commission for a business sale is between 5-10%, but like real estate, there is no standard. 

Due to our experience realtors are typically good at running rental comps from different sources though.

I like that your goals are very specific and it's not the typical newbie "I work so hard blah blah blah"Your first question can best be found either from a friendly BP investor from the Bay like Min who might pop into this thread, or you can just find the answer at your local REIA.Your 2/3/4 - typically people use assignment contracts or double closes.

I am currently putting in offers on properties and am looking to have an attorney ready for the attorney review process.Also, for the BP lawyer folks, how do you typically handle fees when a deal falls through?

As long as you are not eating the paint chips with lead in them  you are typically fine. https://www.epa.gov/lead

Typically not unless you are replacing the under-layment as well.

So I assume whatever process that you say will be required would be to ensure that such a scheme is not an attempt to subvert the "related party" issue... although that is typically accomplished by an affidavit at closing.