K.S.
I am a realtor with Baird & Warner in Glen Ellyn and in this market we are getting more people wanting to rent rather than buy. Also if someone is coming brand new to the area, it's better to rent for the 1st year to get to know the area and where they want to be...easier to move when you are renting.
There is no fee charged. The realtor will most likely get paid by the owner of the rental when the rental agreement and all are completed. They will no doubt, check credit and your friend would also have to fill out a rental application. Any realtor will be glad to show whatever is available in their price range. Try the B & W office in Naperville. K. S