Custom and practice in the rental industry is that the landlord pays the fees for a real estate agent who brings tenants to the rented unit. I would carefully read all written agreements that you signed concerning your rental. If there is no language concerning your obligation to pay any real estate commissions then you are not responsible for such.If your landlord is planning on keeping your security deposit, he or she needs to send you an itemization within 21 to 45 days after move out with back up invoices showing what your security deposit is being debited for.