Alloy Development commences second phase of Alloy Block at One Third Ave.

Brooklyn, NY Alloy Development (Alloy) commenced the second phase of the Alloy Block downtown and the tallest Passive House building in the world, One Third Ave. Rising to 725 ft., the 63-story mixed-use tower will be situated on the westernmost portion of the Alloy Block and will include market-rate and affordable housing, retail and commercial office space. One Third Ave. will complete the Alloy Block, a mixed-use development designed by Alloy that includes New York City’s first all-electric skyscraper and first two public schools designed to meet Passive House standards. 

“One Third Ave will raise the bar for sustainable urban development,” said Alloy CEO Jared Della Valle. “Developing a Passive House building at this scale will be incredibly challenging, but the payoff will be significant with high quality living that remains environmentally friendly and energy efficient. The second phase of the Alloy Block will demonstrate new possibilities to the industry and stand as an example of a solution that helps stall climate change.”

The building’s 583 apartments, 152 of which are affordable, will be located at the top of the building from floors 11 to 60 and will provide residents with the quality design that Alloy has made standard in all of its developments. The tower’s podium will consist of six floors of office space, elevated 100 ft. above grade, with 11,300 s/f of leasable area per floor. Adaptive reuse of two historic buildings from the 1800s on State St. and Schermerhorn St., along with a new building on Third Ave., will provide retail for the surrounding community.

The façade of the building will be designed with oversized 6 ft. by 7.5 ft. operable windows that offer views and let in natural light, while adhering to Passive House standards. An airtight, well-insulated building envelope and filtered fresh air will offer a healthy indoor environment with a low carbon footprint. The development’s residential and office spaces will share energy resources to minimize waste heat. 

One Third Ave’s mixed-use tower will rise from an interior courtyard sitting behind the two historic buildings, providing a historical connection to the neighborhood. Entrances to the various uses are oriented to complement the character of the adjacent streets. The residential lobby entrance will be within the existing building on State St., a quiet, tree-lined block. In contrast, the commercial lobby entrance will sit on the busy corridor of Schermerhorn and the future Temple Square Plaza. Retail storefronts will stretch along Third Ave. between the historic structures and the new contemporary infill.

One Third Ave follows the first phase of the Alloy Block and New York City’s first all-electric skyscraper, 505 State St. The 44-story tower located at the State St. and Flatbush Ave. intersection is a mixed-use development where residents are redefining green living. All 441 apartments replace all functions typically run by natural gas with electricity, eliminating carbon emissions across the building and promoting healthier indoor environments. 505 State St. offers residents a selection of amenities, including a 3,000 s/f gym, a yoga studio, a grow room, playspace for children, and ample workspace. The building also leads the way for energy-efficient transit-oriented development, with more than 500 bike parking spaces and no parking for cars. Along with 30,000 s/f of retail space, 505 State St. is next door to two schools that meet Passive House standards – the city's first public schools to do so. 

Once complete, the Alloy Block will be one of the most sustainable blocks in Brooklyn, home to over 1000 residences, including approximately 200 permanently affordable apartments, 60,000 s/f of class A office space, 50,000 s/f of retail space and two Passive House public schools.