David Geffen buys Denise Rich’s New York Co-Op for $54 Million David Geffen is now the proud owner of what was New York's most expensive co-op listi[...] July 17, 2012 / Hank Epton / Tags: celebrity real estate, David Geffen, Denise Rich, Denise Rich apartment, Fifth Ave co-op, Fifth Ave., luxury homes, luxury real estate, New York Real Estate, real estate