Building Energy Code

June 18, 2023


NOTE: The new Energy Code became effective starting October 3, 2016. The NYS 2016 Uniform Code Supplement can be accessed at this link

Much of the information presented in this summary is drawn from the U.S. Department of Energy’s (DOE) Building Energy Codes Program and the Building Codes Assistance Project (BCAP). For more detailed information about building energy codes, visit the DOE and BCAP web sites.  

The Energy Conservation Construction Code of New York State (ECCCNYS) requires that all government, commercial and residential buildings, including renovations involving building system replacement, must follow the 2015 International Energy Conservation (IECC) code. Historic buildings and buildings that do not use either electricity or fossil fuel for comfort conditioning are exempt from these requirements.

The State Fire Prevention and Building Code Council has the responsibility make amendments and provide technical support on the form of interpretations and variances.  The State Fire Prevention and Building Code Council voted on March  9, 2016  to update the ECCCNYS.  This current code was based on the 2015 IECC and 2013 ASHRAE 90.1, along with several NYS specific enhancements (the previous ECCCNYS was based on the 2009 IECC supplement and ASHRAE 90.1-2010).  The newly adopted building codes became effective starting October 3, 2016. 

Enforcement of the requirements rests with the governmental entity administering and enforcing the provisions of the Building Construction Code or the Fire Prevention and Building Construction Code applicable within the municipality.

Electronic versions of NY codes are available for a fee at: Free online versions of the NY codes can be accessed at the Division of Code Enforcement and Administration (DCEA) website.

Program Overview

Implementing Sector: State
Category: Regulatory Policy
State: New York
Incentive Type: Building Energy Code
Web Site:
Start Date:
Eligible Renewable/Other Technologies:
  • Comprehensive Measures/Whole Building
Residential Code: State-developed code (ECCCNYS) based on the 2018 IECC with amendments, mandatory statewide. REScheck is available to show compliance.
Commercial Code: State-developed code (ECCCNYS) based on ASHRAE 90.1- 2016 with 2018 IECC is mandatory statewide. COMcheck is available to show compliance.
Code Change Cycle: The Building Energy Codes became effective starting May 12, 2020.
Jurisdictions: Mandatory statewide

This information is sourced from DSIRE; the most comprehensive source of information on incentives and policies that support renewables and energy efficiency in the United States. Established in 1995, DSIRE is operated by the N.C. Clean Energy Technology Center at N.C. State University.