425 Grand Concourse is featured in the NYC Mayor’s Office of Environmental Coordination’s Leading Green Public Projects 2025 report, which recognizes New York City capital projects that exceed the City’s minimum green building standards and demonstrate design excellence, innovation, and environmental performance.
Designed by Dattner Architects, 425 Grand Concourse is a 26-story, 300,000 SF mixed-use affordable housing development in the Bronx. Developed by Trinity Financial and MBD Community Housing Corporation, with the New York City Department of Housing Preservation and Development serving as both sponsor and managing agency, the project brings together 277 affordable homes with essential neighborhood-serving amenities, including a medical facility, supermarket, community support space, and a student services center for CUNY Hostos.
One of the largest Passive House-certified projects in North America, 425 Grand Concourse demonstrates how advanced environmental building performance can be achieved alongside the successful provision of critical public services and amenities. The project achieved PHIUS+ 2018 CORE Passive House certification, up to a 70% reduction in energy use, a predicted site EUI of 22.1 kBTU/SF/year, and a 30%+ reduction in indoor water use.
Its high-performance, airtight building envelope and Energy Recovery Ventilation system support resident comfort, indoor air quality, long-term affordability, and resilience. These systems provide residents with fresh, filtered air, stable indoor temperatures, improved acoustic comfort, and greater passive survivability during extreme weather events or power outages.
425 Grand Concourse also advances the broader well-being of the neighborhood. Its mixed-use program expands access to food, healthcare, education, and community space, while residential amenities—including recreation areas, a landscaped roof terrace, fitness room, lounge space, and bicycle storage—support active, connected daily life and social cohesion.
“As New Yorkers, we are so fortunate to live in a city that invests in sustainable, resilient, and elegant buildings. With this report’s sampling of projects, the Mayor’s Office of Environmental Coordination demonstrates that sustainability is achievable and replicable, and that NYC is leading the way by investing in our shared Essential Architecture of schools, libraries, institutions, and affordable housing. Dattner Architects is honored to be included in this body of work.” — John Woelfling, FAIA, LEED AP, CPHT, Partner, Dattner Architects
425 Grand Concourse reflects Dattner Architects’ commitment to essential architecture that advances equity, sustainability, and civic life. Its inclusion in Leading Green Public Projects 2025 underscores the role of high-performance affordable housing in shaping a healthier, more resilient, and more inclusive New York City.
Read the full report here.