If you've just purchased your home and are being suddenly transferred, the odds are that you will have trouble making the numbers work, unless there is a housing shortage in your market. As a practical person you will most likely take out the Sunday paper and call local management companies to establish the rental rate for your house. Being overconfident sets you up for unexpected problems. Bear in mind, however, that location still rules with real estate. Good locations rent faster and get better rents.
Poor locations take longer to fill and get lower rents.
If your property is in disrepair and in a poor location it may not rent at all. Furniture can get marred, cigarette burned, scratched and possibly borrowed on a permanent basis. Finally, if you want to hire a property management firm, interview at least three of them and then compare their services. All of them will have different estimates of rental value. Ask how they will take care of your tenants.