The tower houses 486 residential condominiums on the upper floors, and a hotel and conference center below. Named after real estate developer donald trump , the 98-story building was designed by architect adrian smith of skidmore, owings & merrill (som). The construction of trump tower took nearly four years, from start to finish, and involved 137,620 m3 (180,000 yd3) of concrete and 25,000 tons of steel reinforcing bars. Learn about the trump international hotel and tower s history , construction , architects, restorations, structure, materials, and more. The building was originally planned to be even taller, but developer donald trump scaled back the design after the september 2001 world trade center attacks. It was completed in 2009 and ranks among the tallest residential buildings in the world.