Adopted codes online

The division works to ensure the adopted codes and standards are accessible. Eight of the adopted specialty codes are available to read online. The remaining codes consist of multiple standards listed on the program pages.

Amendments, errata, helpful tools, and additional information can be found on the code program pages.
The current or most recent code adoption process information can be found on the code adoption pages.

Commercial structures

2022 Oregon Structural Specialty Code (OSSC)

Effective: Oct. 1, 2022 with a *6-month phase-in period
Mandatory: April 1, 2023
Based on the 2021 International Building Code (IBC) and International Existing Building Code (IEBC)
Summary of amendments to the base model codes

*During the phase-in period, use of the 2019 OSSC or the 2022 OSSC is permitted.

Code program Code adoption

2019 Oregon Structural Specialty Code (OSSC)

Effective Oct. 1, 2019
Based on the 2018 International Building Code (IBC) and International Existing Building Code (IEBC)
Chapter 1 interim amendments - Effective April 1, 2021
Tsunami design standards, (HB 2605) amendments - Effective Jan. 1, 2022
Child care facilities in dwellings amendments - Effective Jan. 26, 2022
Issued Errata

Energy efficiency

2021 Oregon Energy Efficiency Specialty Code (OEESC)

Effective April 1, 2021, with a six-month phase-in period
Mandatory Oct. 1, 2021
Construction standards: ASHRAE Standard 90.1-2019
Errata to Standard 90.1-2019

Code program Code adoption

Residential structures

2021 Oregon Residential Specialty Code (ORSC)

Chapter 1: Effective and mandatory April 1, 2021
Construction standards: Effective April 1, 2021, and Mandatory Oct. 1, 2021
Based on the 2018 International Residential Code (IRC)
Summary of significant changes to the ORSC

Code program Code adoption

Electrical

2021 Oregon Electrical Specialty Code (OESC)

Effective April 1, 2021
Based on the 2020 NFPA 70 - National Electrical Code (NEC)
Oregon amendments to the 2020 NEC

Code program Code adoption

Mechanical

2022 Oregon Mechanical Specialty Code (OMSC)

Effective: Oct. 1, 2022 with a *6-month phase-in period
Mandatory: April. 1, 2023
Based on the 2021 International Mechanical Code (IMC) and International Fuel Gas Code (IFGC)
Summary of amendments to the base model codes

*During the phase-in period, use of the 2019 OMSC or the 2022 OMSC is permitted.

Code program Code adoption

2019 Oregon Mechanical Specialty Code (OMSC)