At number 16 on our countdown is The Alloy Block, a multi-tower complex designed and developed by Alloy Development in downtown Brooklyn. Located along the border with Boerum Hill, the project includes 840-foot-high 80 Flatbush Avenue and 44-story, 482-foot-high 100 Flatbush Avenue. Hunter Roberts Construction Group is in charge of the foundation construction, and Urban Atelier Group will take charge of the superstructure work, which will rise from the trapezoidal land bounded by Flatbush Avenue on the northeast, State Street on the southwest and 3rd Avenue. to the northwest .
Recent photos show the progress of foundation work for the shorter tower at 100 Flatbush Avenue and the 80 Flatbush Avenue site cleaned and ready for excavation.
The land at 100 Flatbush Avenue is populated with various construction equipment, piles, steel rebar and concrete formwork, while a large amount of soil has already been removed from both sites.
100 Flatbush is depicted in previous renderings with a massing reminiscent of the Flatiron Building, formed by the narrow confluence of Flatbush Avenue and State Street. Its exterior consists of shallow recesses and a cohesive facade of floor-to-ceiling glass panels and dark vertical mullions that collectively emphasize a greater sense of verticality. At the bottom of the building, there will be retail on the ground floor with 350 feet of frontage facing Flatbush Avenue.
100 Flatbush Avenue will become New York City’s first fully electric tower and will have all building functions powered by electricity, including induction cooktops, heat pump dryers, water hot and HVAC. The residences will be located between the third and 41st floors, with the majority of the amenities housed in the podium, including a fitness center, flexible workspace and an outdoor rooftop pool. It has been reported that Alloy Development will be removing 100,000 square feet of office space and replacing it with 184 additional apartments, bringing the total number of new units to 441, with 45 units, or about ten percent, marked as affordable.
80 Flatbush is almost double the height of its southern counterpart and will become a fairly dominant part of the skyline with its relatively secluded position on the outskirts of downtown Brooklyn. We’ve seen several iterations of the design and exterior that show off its architectural height and mass, though nothing seems definitive. The renderings below are the most recent and give us a general idea of what to expect in the near future. This larger component of The Alloy Block is to be carried out in conjunction with the New York City Educational Construction Fund and will include New York’s first two Passive House Schools, Khalil Gibran International Academy (KGIA) High School and a 500-seat elementary school. meeting the highest standards in terms of energy efficiency and indoor air quality.
The Alloy Block master plan consists of office space, auditoriums and cultural institutions. The two planned schools will have a capacity of 350 students each and are being considered by the design architect Architecture Research Office with Ismael Leyva Architects as the reference architect. Silman Associates and Magnussen Klemenic is the Structural Engineer, Consentini & Associates is the MEP Engineer, Front Inc. is the Facade Consultant, Nelson Byrd Woltz is the Landscape Architect, Thorton Thomasetti is the Sustainability Consultant, Lighting Workshop is the lighting consultant, Langan is the geotechnical engineer, and AKRF is the civil engineer.
The KGIA at 380 Schermerhorn Street consists of a new cafeteria, gymnasium and library, while the elementary school is located at 489 State Street with its own gymnasium and auditorium, also accessible to the community.
The closest subways to The Alloy Block are trains 2, 3, 4, and 5 at Nevins Street station to Flatbush Avenue and trains B, D, N, Q, and R at Atlantic Avenue-Barclays station. Long Island Railroad trains under Atlantic Terminal cross Flatbush Avenue in the southeast.
100 Flatbush Avenue is slated for completion in the first half of 2024, with remaining work on 80 Flatbush Avenue and both schools to follow shortly thereafter. It is expected to last three years and therefore possibly end in 2027.
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