In my previous life (not really), my research interests focused on examining effects of brown fields on proximate neighborhood including price effects. In New York City, this would be far too chaotic as you can see here on this PropertyShark.com interactive graphic.
But how is upstate New York faring? Apparently not too bad – Cleaning Up Toxic Brownfields – Upscale NY Gets VIP Treatment (publicnewsservice.org).
An excellent interactive visualization on reshaping New York during the Bloomberg years.
A coalition that includes real estate developers and investors has been floating the idea as part of a package of reforms intended to overhaul federally funded real estate programs. Home loan programs, direct grants and tax credits add up to some $450 billion a year in federal spending that the group says mostly benefits a small proportion of households.