
When built, the bank's footprint measured 114 feet (35 m) on Fleet Street, 30 feet (9.1 m) on Albee Square, and 143 feet (44 m) on DeKalb Avenue. The original bank building is shaped like a hexagon, with chamfered corners at the north, southwest, and southeast.

Form Ī rendering of the skyscraper in Downtown Brooklyn The developer's in-house construction company, JDS Construction, was the lead contractor. WSP Global was the structural engineer for the tower, while Jaros, Baum & Bolles provided MEP engineering. The structure is the tallest building in Brooklyn, the tallest physically on Long Island, and the tallest in New York City outside Manhattan. Adjacent to the bank is the 1,066-foot (325 m) tower section, designed by SHoP Architects. The bank, built in 1906–1908 and expanded in 1931–1932, was designed in the Classical Revival style. The base includes the Dime Savings Bank Building, designed by Mowbray and Uffinger. The Brooklyn Tower was developed by Michael Stern's JDS Development Group. The Brooklyn Tower exceeds the height of Brooklyn Point, the second-tallest building in Brooklyn as of 2022, by around 350 feet. Both were surpassed by the Brooklyn Tower in July 2021 when the latter's height reached 721 feet (220 m). The Brooklyn Tower is within several blocks of the former tallest buildings in Brooklyn, Brooklyn Point and 11 Hoyt. The building stands across from an entrance to the DeKalb Avenue station of the New York City Subway's B, Q, and R trains. The campus of LIU Brooklyn, including the Brooklyn Paramount Theater, is across Flatbush Avenue Extension to the east. The building is adjacent to other tall mixed-use developments, such as the three towers of City Point immediately to the west and One Willoughby Square one block west. The site covers 46,367 square feet (4,307.6 m 2), with a frontage of 219.92 feet (67.03 m) on Flatbush Avenue and a depth of 380.8 feet (116.1 m) from Flatbush Avenue to Fleet Street. The southwest corner faces a pedestrian plaza at Albee Square, and the Brooklyn Tower wraps around a structure at 33 DeKalb Avenue to the southeast. The building's site occupies much of the triangular city block bounded by Fleet Street to the northwest, DeKalb Avenue to the south, and Flatbush Avenue Extension to the northeast. The Brooklyn Tower is at 9 DeKalb Avenue and 340 Flatbush Avenue Extension in the Downtown Brooklyn neighborhood of New York City. The tower's superstructure topped out during October 2021, and sales of the condominiums began in 2022. The bank was sold off in 2014, and the Brooklyn Tower was constructed as an annex to the Dime Savings Bank starting in 2018.

The original building, which operated as Dime Savings Bank's main branch for over a century, was expanded by Halsey, McCormack and Helmer in 1931–1932. The bank building was built in 1906–1908 for the Dime Savings Bank of Brooklyn.

The tower section accommodates approximately 150 condominiums and 425 rental apartments, totaling roughly 466,000 square feet (43,300 m 2). The building includes 120,000 square feet (11,000 m 2) of amenity spaces, some of which are within the bank.

The bank's interior contains a hexagonal rotunda, which is used as retail space. The Dime Savings Bank Building contains a white-marble facade with colonnades a diagonal entrance portico on Albee Square and a domed roof. The tower is the first supertall building in Brooklyn, as well as the tallest building in Brooklyn and the tallest in New York City outside Manhattan. Preserved at the skyscraper's base is the Dime Savings Bank Building, designed by Mowbray and Uffinger, which dates to the 1900s. The main portion of the skyscraper is a 93-story, 1,073-foot (327 m) residential structure designed by SHoP Architects. Developed by JDS Development Group, it is situated on the north side of DeKalb Avenue near Flatbush Avenue. The Brooklyn Tower (originally referred to as 340 Flatbush Avenue Extension and as 9 DeKalb Avenue) is a supertall mixed-use, primarily residential skyscraper in the Downtown Brooklyn neighborhood of New York City.
