Oregon Energy Efficiency Specialty Code

The division works with the Construction Industry Energy Board to adopt the Oregon Energy Efficiency Specialty Code (OEESC). The OEESC adoption process starts with the publication of an updated ASHRAE Standard 90.1, Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings.

Adopted commercial energy code

2025 Oregon Energy Efficiency Specialty Code (OEESC)
Chapter 13 of the Oregon Structural Specialty Code (OSSC)
Effective: Jan. 1, 2025 with 6 month phase-in period
Mandatory: July 1, 2025
Based on ASHRAE Standard 90.1-2022
Access an online version of ASHRAE Standard 90.1-2022

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Code adoption timeline

Throughout the code adoption process important notices and events will be posted here.