Los Angeles is seeing a boom in tall buildings. “In all, 32 towers are on the horizon for downtown, though some still need city approval as well as financing. Twenty are considered skyscrapers because they climb more than 240 feet, or about 20 stories. From 1986 to 1992, almost two-thirds of towers 20 stories or more built in the U.S. were for office use. But recently this has really flipped. “Between 2003 and June 2005, about 84% of new towers were for residential, multifamily use — an indication of investor and consumer appetite for multifamily condo development. Luxury high-rises are what’s being demanded.”