The sharpest slowdown in U.S. home-price growth in three decades is trapping owners with mortgages they can't afford, pushing unsold homes to a record 4.42 million and gutting profits for builders such as Lennar Corp. and Toll Brothers Inc. The U.S. median home price next year may fall for the first time since the Great Depression, says Gabriel Stein, chief international economist with Lombard Street Research in London.
