1 Percentage of monthly rent: If you choose to employ a property management company on a full-service basis, you'll most likely be charged a percentage of the monthly rent on your property.2  This can range anywhere from 5-15%, with 8-10% being common.3  Under this fee structure, if your unit isn't rented, you don't pay. Percentage of monthly rent: If you choose to employ a property management company on a full-service basis, you'll most likely be charged a percentage of the monthly rent on your property.