This paper was presented at the conference "Policies to Promote Affordable Housing," cosponsored by the Federal Reserve Bank of New York and New York University's Furman Center for Real Estate and Urban Policy, February 7, 2002. It was part of Session 2: Affordable Housing and the Housing Market.

Real estate markets are periodically plagued by excess supply, rent concessions and few arms-length transactions. During such periods, valuation is problematic. The model presented here requires the forecasts of future vacancy rates, and equilibrium and actual rental rates. Vacancy rate...