It has two major condominiums of office space: a lower section operated by the New York Times Company and an upper section operated by Brookfield Properties, which took over Forest City Ratner's stake in 2019. The Times space on the 2nd to 27th stories covers , about 58 percent of the office space, while the 29th to 52nd stories spans , covering the remaining 42 percent. The lobby and the mechanical spaces on the 28th and 51st stories are shared by the building's major operators. The top floor is high. The Times Building rises from the street to its roof, while the exterior curtain wall rises to and its mast rises to . , including its mast, the New York Times Building is the eleventh-tallest building in the city, tied with the Chrysler Building. The Times Building was designed as a green building. During the building's construction, the architects created a mockup of a portion of the building to test out its environmental features. A yearlong study by the Lawrence Berkeley National Lab and Center for the Built Environment found the Times Building had significant reductions in annual electricity use, utilized less than half the heating energy, and decreased the peak electric demand compared to similarly sized office buildings. The developers did not wish to achieve Leadership in Energy and Environmental Design (LEED) certification, since that would have required extra expenditures, such as keeping track of construction debris. Form and facade The Times Building consists of two sections: the 52-story tower on the western portion of the site and a four-story podium occupying the eastern portion. The tower section covers about , with dimensions of . The corners of the tower are notched, creating a cruciform layout. The outer columns on the west and east elevations are recessed several feet into the building. The center bays of the north and south elevations are cantilevered slightly past the outermost columns to the north and south. The podium measures . The building contains a single basement level underneath the entire site, extending below grade. There are three office entrances, one each on Eighth Avenue, 40th Street, and 41st Street. The facade consists of a glass curtain wall, with ceramic rods mounted on aluminum frames in front of the curtain wall. The facade was made by Benson Global, while the rods were subcontracted to a German sewer-pipe manufacturer. In designing the building, Piano