One unit is foreclosed and owned by Chase but in the process of getting transferred to HUD....since 2013....to get their guarantee money from the government.  

Tenant classes refer to the quality of your tenants, often governed by average monthly income.  

As do most Government funded programs now. 

Since you are an investor, HUD feels you know the risks and does not feel sorry for you since you are likely to make money off poor old defenseless big government.

Unless you can pinpoint who it was, whoever is responsible for the window in the governing documents will most likely have to pay to get it repaired.  

How do I check if the property exist (can I check government record online to know who is the owner of the property?

I would also see if your properties might qualify for any government grants for upgrades. 

Understanding the international treatment of taxation can be the difference to making money or losing it to government regulators either in the USA or in your home country.In regards to feet on the ground I would suggest that once you have identified your market that you seek referrals from the many highly experienced and supportive members that operate on BP.

It seems to me either the government should get out of the loan business for English, History, and basket weaving students and let and the lenders deal with these borrowers at their own risk and face the possibility of actual student default, and bankruptcy protection, or qualify these taxpayer backed, non-defaultable loans by insuring the quality of the academic endeavor (sic STEM).  

People are so worried about how much in taxes they pay to the government that they would rather net less money themselves if it means they pay less to the feds.