Fee to setting up a deal

[Alix Khan]

I have a situation and was wondering if someone could provide some insights into it.

How to does one get compensated if one brings investors to a table?

Let's say someone is trying to buy commercial real estate (apartment buildings, strip mall etc) and is need of investors. If I can bring investors to the table, how should I be compensated and how much? Is it unreasonable to expect some commission/fees in this case?

Thanks