It all depends on how the bylaws are written but as they are most of the time boiler plate decs it is pretty standard that you pay the prorated percentage your unit makes up based on the decs.  

Of course, the broker would get his/her percentage.

What percentage is that?

@Anthony Talpak,I'm not sure if anyone addressed this yet, but the interest charged by a lender (private, bank, hard money, etc) is calculated annually (99% of the time), hence the term APR (annual percentage rate). 

A better question to ask is "what percentage of your client base is made up of real estate investors" or "how many real estate investors do you service?"

What percentage is reasonable for a fee?

The reason being is that they know there are people that have preferences for one reason or another, and they don't need EVERY customer, just a percentage of the customers.

A company that I am associated with, Renovation Funders, has a great program that matches you up with a project, and when that project is completed, you get paid your investment back plus a percentage of the selling price after the property sells.

Each individual should have a percentage commensurate to the amount of value they bring to the table. 

@Cashmere Robinson Great point on looking for a distressed property to add instant equity with the work put into the property.Account Closed Thanks for the advice and good points to consider.