Anyone interested in residential, if not commercial, real estate over the past couple of years knows the big plays have been in the multifamily sector. The reasons are fairly obvious. During the boom years, the flood of easy money into single-family homes left the apartment sector on the sidelines. Then came the recession and multifamily was starved for new development capital. The end result was a shortage of new multifamily projects just as the need for rentals began to lift in a big way -- not only from folks who lost their homes during the recession but from young people who were finally making enough money to move into their first rental situation. A couple of data points: According to the Census Bureau, apartment building starts were trending toward 229,000 units this year,...