Not big money, but with very little money out of your own pocket, the percentage returns should be astronomical.You haven't said a word about operating expenses as a buy and hold nor rehab costs to get the property to "safe, clean and livable" (which normally will be well below the cost to make a property marketable for retail sale.)

Does anybody know percentages of clients that disappear vs actually buy?

There's 2 simples ways to protect yourself.1) Draft up a general "Marketing agreement" which should say something along the lines of, everything that I bring you I will get X (flat fee or percentage, your choice).2) You could also get the property under contract yourself and "assign" your contract to him. 

They had divided interests among multiple businesses.Finally I decided to buy an office building and hire a full time employee that does nothing but work on my business all the time.I set a salary paid every 2 weeks and then a bonus structure of a certain percentage of income for my commercial real estate transactions.

The more offers you make, the more deals you find, and some percentage of those end up under contract and surviving due diligence.

what percentage down did they offer you?

I am trying to figure out how to determine the percentage of owner occupied homes and the percentage of tenant homes in a particular subdivision.

The most prevalently-quoted conventional 30yr fixed rate for top tier scenarios remains 3.875% with a few lenders an eighth of a percentage point higher, and fewer still at 3.75%.

How to I go about adding a member and documenting the percentage for each of us?  

If so, what percentage of the time does it work, if at all?