New York City has adopted the 2025 NYC Energy Conservation Code based on the 2024 International Energy Conservation Code® (IECC®) and the NYC Existing Building Code based on the International Existing Building Code® (IEBC®). These decisions are a testament to the City’s commitment to maintaining the highest standards in building safety and sustainability.

“New York City is making history with the adoptions of the 2025 NYC Energy Conservation Code and the NYC Existing Building Code,” said Vice President, Government Relations at the International Code Council Dottie Mazzarella. “These adoptions will modernize the City’s building regulatory framework and strengthen protection for its residents. It has been an honor to contribute to advancing public safety for the people of this great City.”

The main objective of the NYC Existing Building Code is to preserve and reuse existing buildings by offering flexible compliance options. This approach will ultimately result in safer buildings. Additionally, the code aims to:

In tandem, New York City has adopted the 2025 NYC Energy Conservation Code to reflect New York State’s adoption of the 2025 Energy Conservation Construction Code, which was based on the 2024 IECC.

Key updates include:

Source:

International Code Council