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Codebook history

A history of the adopted codes and standards

Versions of the Oregon Structural Specialty Code (OSSC) available online​

2019 Oregon Structural Specialty Code - Effective Oct. 1, 2019

2014 Oregon Structural Specialty Code - Effective July, 1, 2014 - Jan. 1, 2020

​2010 Oregon Structural Specialty Code - Effective July 1, 2010 - Sept. 30, 2014

Adopted model code history

International Building Code (IBC)

2019 OSSC - 2018 IBC - Effective Oct. 1, 2019
2014 OSSC - 2012 IBC - Effective July 1, 2014
​2010 OSSC - 2009 IBC - Effective July 1, 2010
2007 OSSC - 2006 IBC - Effective April 1, 2007
2004 OSSC - 2003 IBC - Effective Oct. 1, 2004

Uniform Building Code (UBC)

1998 OSSC - 1997 UBC - Effective Oct. 1, 1998
1996 OSSC - 1994 UBC​ - Effective April 1, 1996
​1993 OSSC - 1991 UBC - Effective Jan. 1, 1993
1990 OSSC - 1988 UBC - Effective Jan. 1, 1990
​1986 OSSC - 1985 UBC - Effective July 1, 1986
1983 OSSC - 1982 UBC - Effective Aug. 1, 1983
​1980 OSSC - 1979 UBC - Effective July 1, 1980
1978 OSSC - 1976 UBC - Effective March 1, 1978
​1974 OSSC - 1973 UBC - Effective July 1, 1974​​​​​​​​​​


Previous versions available online​

2017 Oregon Electrical Specialty Code (OESC) - Effective April 1, 2021 | Amendments Summary

​​​​2014 Oregon Electrical Specialty Code (OESC) - Effective Oct. 1, 2014 | Amendments Summary

2011 Oregon Electrical Specialty Code (OESC) - Effective April 1, 2011 | Amendments Summary​

​2008 Oregon Electrical Specialty Code (OESC) - Effective April 1, 2008​

Adopted model codes

NFPA 70, National Electrical Code (NEC)

  • 2021 OESC / NEC - Effective April 1, 2021
  • 2017 OESC / NEC - Effective Oct. 1, 2017
  • 2014 OESC / NEC - Effective Oct. 1, 2014
  • 2011 OESC / NEC - Effective April 1, 2011
  • 2008 OESC / NEC - Effective April 1, 2008
  • 2005 OESC / NEC - Effective April 1, 2005
  • 2002 OESC / NEC - Effective Oct. 1, 2002
  • 1999 OESC / NEC - Effective April 1, 2000
  • 1996 OESC / NEC - Effective Oct. 1, 1996
  • 1993 OESC / NEC - Effective July 1, 1993
  • 1990 OESC / NEC - Effective July 1, 1990
  • 1987 OESC / NEC - Effective May 1, 1987
  • 1984 OESC / NEC - Effective July 1, 1984
  • 1981 OESC / NEC - Effective Oct. 1, 1981
  • 1978 OESC / NEC - Effective Jan. 1, 1978
  • 1975 OESC / NEC - Effective July 1, 1975
  • 1971 OESC / NEC - Effective May 1, 1972 (est.)
  • 1968 OESC / NEC - Effective Jan. 1, 1969​​​​​​​​​​​​​​​​​​​​​​​​​

Previous versions available online

2014 Oregon Energy Efficiency Specialty Code (OEESC) - Effective July 1, 2014 - Dec. 31, 2019

2010 Oregon Energy Efficiency Specialty Code (OEESC)​ - Effective July 1, 2010

Adopted model codes

ASHRAE Standard 90.1

  • 2019 OZERCC: Part I Commercial construction - ASHRAE Standard 90.1-2016 - Effective Oct. 1, 2019

International Energy Conservation Code (IECC)

  • 2019 OZERCC: Part II Multi-family construction - 2018 (IECC) - Effective Oct. 1, 2019
  • 2014 OEESC - 2009 (IECC) - Effective July 1, 2014
  • 2010 OEESC - 2009 (IECC) - Effective July 1, 2010​​​​​​​​​​​​​​​​​​​​​​​​​​

Previous versions available online​

2014 Oregon Mechanical Specialty Code (OM​SC)
​​​​​​Effective: July 1, 2014 - Jan. 1, 2020​​
​Based on the 2012 International Mechanical Code (IMC)
  • Appendix D - New construction amendments
  • Pizza oven definition amendments
  • Guards Section 304.11 errata​​
  • ​​2010 Oregon Mechanical Specialty Code​ - Effective July 1, 2010

    Adopted model codes

    International Mechanical Code (IMC)

    • 2019 OMSC - 2018 IMC - Effective Oct. 1, 2019
    • 2014 OMSC - 2012 IMC - Effective July 1, 2014
    • 2010 OMSC - 2009 IMC - Effective July 1, 2010
    • 2007 OMSC - 2006 IMC - Effective A​pril 1, 2007
    • 2004 OMSC - 2003 IMC - Effective Oct. 1, 2004
    • 2002 OMSC - 2000 IMC - Effective Oct. 1, 2002
    • 2000 OMSC - 1998 IMC - Effective Oct. 1, 1999

    Uniform Mechanical Code (UMC)

    • 1996 OMSC - 1994 UMC - Effective April 1, 1996
    • 1993 OMSC - 1991 UMC - Effective Jan. 1, 1993
    • 1990 OMSC - 1988 UMC - Effective Jan. 1, 1990
    • 1986 OMSC - 1985 UMC - Effective May 1, 1986
    • 1983 OMSC - 1982 UMC - Effective Aug. 1, 1983
    • 1980 OMSC - 1979 UMC - Effective July 1, 1980
    • 1978 OMSC - 1976 UMC - Effective March 1, 1978
    • 1974 OMSC - 1973 UMC - Effective July 1, 1974​​​​​​​​​​​

    Previous versions available on​line

    2017 Oregon Plumbing​ Specialty Code (OPSC)

    2014 Oregon Plumbing Specialty Code (OPSC)​

    2011 Oregon Plumbing Specialty Code (OPSC)​

    Adopted model codes

    Uniform Plumbing Code (UPC)

    • 2017 OPSC - 2015 UPC - Effective Oct. 1, 2017
    • 2014 OPSC - 2009 UPC - Effective Oct. 1, 2014
    • 2011 OPSC - 2009 UPC - Effective April 1, 2011
    • 2008 OPSC - 2006 UPC - Effective April 1, 2008
    • 2003 OPSC - 2003 UPC - Effective April 1, 2005
    • 2000 OPSC - 1997 UPC - Effective April 1, 2000
    • 1996 OPSC - 1994 UPC - Effective April 1, 1996
    • 1992 OPSC - 1991 UPC - Effective Feb. 1, 1992
    • 1990 OPSC - 1988 UPC - Effective Jan. 1, 1990
    • 1987 OPSC - 1985 UPC - Effective Jan. 1, 1987
    • 1984 OPSC - 1979 UPC - Effective Oct. 13, 1984
    • 1981 OPSC - 1979 UPC - Effective July 1, 1981
    • 1978 OPSC - 1976 UPC - Effective Jan. 1, 1978
    • 1975 OPSC - 1973 UPC - Effective Feb. 1, 1975​​​​​​​​​​​​​​​​​​

    Previous versions available online

    2014 Oregon Residential Specialty Code​ - Effective Oct. 1, 2014 to Jan. 1, 2018

    2011 Oregon Residential Specialty Code​ - Effective July 1, 2011 to Jan. 1, 2014

    2008 Oregon Residential Specialty Code​ - Effective April 1, 2008 to Oct. 1, 2011

    Adopted model codes

    International Residential Code (IRC)

    • 2017 ORSC - 2015 (IRC) - Effective Oct. 1, 2017
    • 2014 ORSC - 2009 (IRC) - Effective Oct. 1, 2014
    • 2011 ORSC - 2009 (IRC) - Effective July 1, 2011
    • 2008 ORSC - 2006 (IRC) - Effective April 1, 2008
    • 2005 ORSC - 2003 (IRC) - Effective April 1, 2005
    • 2003 ORSC - 2000 (IRC) - Effective April 1, 2003

    Council of American Building Officials (CABO)

    • 1998 - (Int. 1 & 2) - Effective April 1, 2000
    • 1995 CABO - Effective April 1, 1996
    • 1992 CABO - Effective April 1, 1995
    • 1992 CABO - Effective May 1, 1993
    • 1989 CABO - Effective April 1, 1990
    • 1986 CABO - Not adopted
    • 1983 CABO - Effective May 1, 1986​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​

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