The Banks will not respond to you: Never.
If you do not have a vested interest in the property, they will not even recognize your existance, much less disclose any information.
If it is a Bank Owned property, (REO), you must go through a local Realtor:
You can find a lot of good, carring, knowledgable Agents on Trulia:
Look for the VIEW A VIP logo, and click on it; enter your CITY and you will find all the members who are in your area. You can look at their PROFILE, EXPERIENCE, and RECOMMENDATIONS. You can e-mail them and ask them questions.
Good luck and may God bless