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A blog from CityRealty (Links below will take you to the 6sqft site)

Features

Rendering of 425 Grand Concourse towering over Mott Haven (Dattner Architects) Rendering of 425 Grand Concourse towering over Mott Haven (Dattner Architects)
Construction has topped out at 425 Grand Concourse, the largest Passive House development in North America to date. The 26-floor project rises high above the Mott Haven neighborhood of the Bronx and is a short walk from the 149th Street subway station serving the 2,4, and 5 lines, the Bronx Terminal Market, and Yankee Stadium. The 290-foot-tall tower was designed by Dattner Architects and according to the firm, the building will accommodate 277 units of affordable housing. a medical facility, supermarket, community support space, and a new student services center for CUNY Hostos.
The project's 30,000-square-foot site, anchoring the corner of Grand Concourse and East 144th Street, once held the landmarked Gothic-style P.S. 31, which was sadly torn down after being deemed structurally unsound. In the summer of 2015, the city’s Department of Housing Preservation and Development (HPD) released an RFP where Trinity Financial and MBD Community Housing Corporation were ultimately selected to redevelop the site with mixed-income housing and community uses.
 
 
 
 
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At 300,000-square-feet, the building will become the largest Passive House in the country it opens in late 2021. The building is expected to use 30 percent less energy than a building built through traditional construction. Aside from a highly-insulated, “airtight” envelope, there will be a vegetated roof deck, solar shading, solar panels, cogen power generation, and an energy recovery system.
Its 277 affordable apartments will be earmarked for low- and moderate-income families. They will feature individual tenant controls, energy-efficient appliances, and water savings fixtures. The project scope also includes a new, accessible walkway to connect Garrison Playground. The building stands high above its immediate area and is one of the tallest in the South Bronx. However taller and larger buildings are planned nearby on the Harlem River waterfront —most notably Brookfield Properties' "Bankside" development at 2401 Third Avenue and 101 Lincoln Avenue.
 
 
 
 
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New York City has dived headfirst into the Passive House movement, pushing forward many of the largest developments in the country to reach for the energy-saving standard. Also commendable is that many of the developments are mixed-income housing schemes spearheaded through public-private partnerships.

Last year we updated you on the progress of two topped-out affordable housing developments seeking Passive House certification: the mixed-use Balton Commons in Harlem and the 655-unit Sendero Verde. The movement appears to be spreading beyond residential uses with the largest commercial office Passive House in the country proposed in Long Island City.
NYC Passive Houses

Additional Info About the Building