Hi! Yes, you may add listings for multiple brokers in your XML feed. There is no restriction that the listings come from one office. If you have not completed the set-up of your XML feed, someone from our Technical Team will be calling you to finalize the set-up and they can answer additional questions you may have.
Thank you for using Trulia for your real estate needs! If you have additional questions, please contact us at http://www.trulia.com/help/ask/
or call Customer Service at 1-888-466-3501.