Oregon uses another model code in place of the IECC commercial

Record of adoption

In force since

Jan 1, 2025

Legal citation

OAR 918-460-0500

Adopted by

Oregon Department of Consumer and Business Services, Building Codes Division (Building Codes Structures Board advises)

Second reading

Agreed Oct 18, 2026

Applies

Based on another model code

Also called

OEESC, 2025 OEESC, Energy Provisions of the Oregon Structural Specialty Code, ANSI/ASHRAE/IES Standard 90.1-2022 with Oregon amendments

Commercial energy code is ANSI/ASHRAE/IES Standard 90.1-2022 with additional Oregon amendments. The rule text that was checked does not mention the IECC. Effective Jan 1, 2025, with a six-month phase-in, mandatory Jul 1, 2025. A separate optional Commercial Reach Code exists.

How Oregon adopts the IECC commercial

• Agency rule

BCD amends OAR 918-460-0500 to move to a new ASHRAE 90.1 edition; the 2025 OEESC rule (BCD 14-2024) was filed Dec 23, 2024, for a Jan 1, 2025, effective date with a phase-in to Jul 1, 2025. The Building Codes Structures Board assists the director with the structural and energy programs, and Executive Order 20-04 directs BCD to set 2030 energy goals and update the optional Reach Code. No legislative approval step was found.

Cycle. Tied to ASHRAE 90.1 editions rather than the IECC; rule history shows amendments effective Oct 1, 2019, Apr 1, 2021, and Jan 1, 2025.

Laws, rulings, and other actions

1. Apr 14, 2025Legislation
   SB 492025 regular session

   Expands the Building Codes Structures Board (ORS 455.132), which assists with the structural and energy programs, from nine to 11 members, with added seats including a fire protection engineer and a structural engineer.

   Enacted 2025 (passed Senate Apr 14, 2025, and House May 8, 2025), effective Jan 1, 2026

   apps.oregonlegislature.gov (opens in a new tab)
2. Mar 10, 2020Executive order
   Executive Order 20-04 (greenhouse gas reduction; building energy efficiency goals)

   Directs BCD to adopt 2030 building energy-efficiency goals for new residential and commercial construction and to update the optional Reach Code on the same timeline; BCD’s Directive 6(B) report was published Sep 15, 2026.

How it was checked

Verified

Two separate readings of the state’s own record agree, and the passage is on file word for word.

Read twice: a second, blind reading of the state’s record agreed with the first on Oct 18, 2026.

The state’s record was last read on Oct 18, 2026, from four source pages.

Evidence 5 sources

Sources for the record itself come first, the state’s own records ahead of others. A label marks a source about something else, such as an exception. A source marked secondary is not the state’s own record.

• “shall consist of ANSI/ASHRAE/IES Standard 90.1-2022 with additional Oregon amendments”

  “Effective January 1, 2025”

  “beginning January 1, 2025 and ending July 1, 2025”

• “BCD 14-2024, amend filed 12/23/2024, effective 01/01/2025”

  “BCD 5-2021, amend filed 03/31/2021, effective 04/01/2021”

  “BCD 11-2019, amend filed 09/26/2019, effective 10/01/2019”

• “2025 Oregon Energy Efficiency Specialty Code (OEESC)”

  “Effective Jan. 1, 2025 with a *6-month phase-in period / Mandatory July 1, 2025”

  “ASHRAE Standard 90.1-2022”

• “Commercial energy provisions are located in the Oregon Energy Efficiency Specialty Code (OEESC).”

  “Residential energy provisions are located in Chapter 11 of the Oregon Residential Specialty Code (ORSC).”

• About the note

  “a statewide optional energy construction standard approved by the Building Codes Division”

  “separate from the state building code and applicable at the designer’s and contractor’s discretion”

Tracker cross-checks

Code adoption trackers are a cross-check. They are not Oregon’s own record.

• DOE’s energycodes.govCross-checkAgrees with the record

  Commercial: ASHRAE 90.1-2022, effective 07/01/2025, mandatory statewide, equivalent code 90.1-2019

  energycodes.gov (opens in a new tab)Read Oct 17, 2026

Related pages

• See Oregon’s IECC commercial on the map
• IECC commercial adoption in every state
• All six codes in Oregon

Other codes in Oregon

• NEC2026 NECVerified
• IBC2024 IBCVerified
• IRC2024 IRCVerified
• IFC2024 IFCVerified
• IECC residentialState’s own codePartial