You can contact the listing agent who will be able to help you learn more about that specific property (and probably will know a lot about similar properties in the area). To find an agent, just click on the yellow button on the property's Trulia listing and you will be able to start a dialogue.
Please let me know if you have any questions or if I can help with anything else. I am happy to be a resource for you. Good luck with the search!
Your best bet is to contact Susan Zellman with the Housing Partnership. She is the director and administers or knows how to get much of the low income housing in Morris County and is well connected. She knows me very well, so let her know I told you to call her. She'll take great care of you and their organization is a fantastic resource. I volunteer there regularly. Here is her contact info: