New York residential energy code

New York residential energy code (2025 Energy Conservation Construction Code of New York State (2024 IECC-based))

As of 2026-10-22. DOE's Building Energy Codes Program (energycodes.gov) lags state adoption, so where a state's own rule was read it governs and DOE's differing figure is noted. Residential means one- and two-family dwellings and townhouses. Local amendments can apply; check the code body before relying on a section.

Key features

Code in force: 2025 Energy Conservation Construction Code of New York State (2024 IECC-based)
In force since: 2025-12-31
Adoption: Statewide code, enforced by local governments
Appendix RG of the code book is a 2024 IECC-based stretch code; NYStretch is published separately by NYSERDA (2025 edition not confirmed).
New York City has its own code (edition not researched).
The code's fossil-fuel equipment provisions are reported suspended by court order.
Verified against the state's own adopted rule or code-body page.

Governing body

State of New York

Region

Applies to

General contracting HVAC Insulation Electrical Windows & doors

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