Commercial Real Estate hit bottom in March 2011:
http://www.bloomberg.com/news/2011-05-23/u-s-commercial-real-estate-prices-decline-to-post-crash-low-moody-s-says.html
Most of QE1 took place from late 2008 to March 2009, the entire program was finished by March 2010:
http://www.bankrate.com/finance/federal-reserve/qe1-financial-crisis-timeline.aspx
Aside from this problem of timing, the money was not spent to prop up commercial real estate.
