Tell Me: Our Lady of Vilnius site on List of Proposed Affordable Housing Sites

Our Lady of Vilnius (aka 568 Broome Street) is included on a list of proposed affordable housing sites issued by the Manhattan Borough President's Office, dated 4/8/2014.  The header reads:

 "Office of the Manhattan Borough President 4/8/14

Proposed Opportunities for Affordable Housing in Manhattan

 Community Board Recommendations"

The church property is included in the "Hudson Square Special District"  the "Notes" column for this umbrella listing reads "21 or more sites with potential inclusionary housing with bonus FAR. Full utilization of potential 

would create over 700 new units of affordable housing. CPC should consider review to secure AH use
esp. with respect to possible conflict between FAR bonus for commercial use versus inclusionary
housing."

I don't know what the abbreviations mean (FAR, AH) and I don't know the implications for our church.  At this point, I don't even know who owns the church.  Please help me figure it all out.  Here's the link to the document:
 http://manhattanbp.nyc.gov/downloads/pdf/4.8.14%20Manhattan%20Opportunities%20for%20Affordable%20Housing.pdf

Thank you for any help you can provide.