Oregon
For Oregon, energy code in force is Chapter 11 - Energy Efficiency; iecc edition basis is 2021 International Residential Code (IRC); effective date is Oct. 1, 2023; adopting authority is Oregon Building Codes Division; statute / rule citation is 2023 Oregon Residential Specialty Code (ORSC), verified against its source on 2026-08-18.
- State
- Oregon verified
- Energy code in force
- Chapter 11 - Energy Efficiency verified
- IECC edition basis
- 2021 International Residential Code (IRC) verified
- Effective date
- Oct. 1, 2023 verified
- Adopting authority
- Oregon Building Codes Division verified
- Statute / rule citation
- 2023 Oregon Residential Specialty Code (ORSC) verified
What the source says
<https://www.oregon.gov/bcd/codes-stand/Pages/alternate-methods.aspx> Statewide alternate methods <https://www.oregon.gov/bcd/codes-stand/Pages/code-interps.aspx> Statewide code interpretations <https://www.oregon.gov/bcd/codes-stand/Pages/appeal-decisions.aspx> Appeals <https://www.oregon.gov/bcd/codes-stand/Pages/design-criteria.aspx> Oregon design criteria hub <https://www.oregon.gov/bcd/codes-stand/Pages/code-adoption.aspx> Code adoption and review Adopted residential energy code 2023 Oregon Residential Specialty Code (ORSC) <https://www.oregon.gov/bcd/codes-stand/Pages/https://codes.iccsafe.org/content/ORRC2023P1/chapter-11-energy-efficiency> Chapter 11 - Energy Efficiency The provisions of Chapter 11 of the ORSC regulate the building thermal envelope, as well as the design, construction and selection of heating, ventilating and air-conditioning systems, piping insulation, lighting and power required for the purpose of effective conservation of energy within a building or structure governed by this code. Effective: Oct. 1, 2023 with 6 month phase-in period Mandatory: April 1, 2024 Based model code: 2021 International Residential Code (IRC)
— oregon.gov, retrieved 2026-08-18
Source
- oregon.govhttps://www.oregon.gov/bcd/codes-stand/Pages/energy-residential-compliance.aspx