NATHAN S. COLLIER is the founder and owner of Paradigm Properties, a property management and development firm, and is a member of the Board of Directors of the National Multihousing Council, the National Association of Real Estate Investment Trusts, and the Urban Land Institute. In addition, he is a registered real estate broker, a licensed building contractor, a certified public accountant, and a licensed attorney. He may be reached at ncollier@opm25.hbs.edu. COURTLAND A. COLLIER, PE, is Associate Professor Emeritus, Civil Engineering, at the University of Florida. DON A. HALPERIN, FA...