Almost 25 years ago Friedman (1970) demonstrated that unsecuritized real estate, because of its relatively high risk-adjusted return and low correlations with stocks and bonds, receives substantial allocations in efficient, mixed-asset portfolios. Fisher and Sirmans (1994) argue that these attractive features of real estate still exist today. In recent empirical work by Mei and Lee (1994), the presence of a unique real estate factor is detected in securitized and unsecuritized real estate returns that cannot be captured by investing in other assets.