New York City studies construction carbon for new building standards
Updated
Updated · The Wall Street Journal · May 8
New York City studies construction carbon for new building standards
9 articles · Updated · The Wall Street Journal · May 8
The Mayor’s Office of Climate & Environmental Justice commissioned New York City University and Rutgers University to set a baseline for emissions from steel, concrete, glass and transport.
The research will inform rules as stricter building-emissions limits approach and after reporting deadlines, with Mayor Zohran Mamdani framing lower embodied carbon as cutting emissions, resource use and costs.
The city aims to halve construction-sector carbon by 2033; construction generates 23% of global greenhouse gases, while cement alone accounts for about 8%, underscoring the shift beyond operational energy use.
As NYC mandates green materials, how will it prevent construction costs from making the city even less affordable?
Can global supply chains deliver enough green materials to rebuild NYC before its 2033 climate deadline?
New York City is mandating a green construction revolution. Is the industry ready for the seismic shift ahead?
New York City's Path to Net-Zero by 2050: Regulatory Shifts, Embodied Carbon Reduction, and Industry Challenges
Overview
Between 2025 and 2026, New York City introduced major regulations targeting embodied carbon emissions in construction, driven by state climate goals and sustainability plans. Key measures include updated building codes with air-leakage testing and the Buy Clean Concrete policy requiring emissions limits and verified product data. These efforts are supported by an Embodied Carbon Action Plan promoting building reuse and low-carbon materials. Meanwhile, Local Law 97 set strict emissions caps for large buildings, leading to high compliance but also industry pushback over costs, especially in affordable housing. Looking ahead, achieving net-zero by 2050 demands stronger caps, technological innovation, extensive retrofits, and broad collaboration, while addressing economic and equity challenges remains critical.