Building Codes in Effect 1940-2016

Building codes are in place to protect public health, safety and general welfare as they relate to the construction and occupancy of buildings and structures. You can find the building codes that Jefferson County has adopted by type and effective dates. Code Supplements are located at the bottom of this page. 

Adopted January 1, 2016

  • 2015 International Residential Code
  • 2015 International Building Code
  • 2015 International Fuel Gas Code
  • 2015 International Mechanical Code
  • 2015 International Plumbing Code
  • 2015 Existing Building Code 
  • 2017 National Electrical Code - (effective 07/01/17)
  • 2009 International Energy Conservation Code
  • 2015 Jefferson County Residential Code Supplement 
  • 2015 Jefferson County Building Code Supplement

Adopted January 1, 2014

  • 2012 International Residential Code
  • 2012 International Building Code
  • 2012 International Fuel Gas Code
  • 2012 International Mechanical Code
  • 2012 International Plumbing Code
  • 2014 National Electrical Code - (effective 07/01/14)
  • 2011 National Electrical Code
  • 2009 International Energy Conservation Code
  • 2012 Jefferson County Residential Code Supplement 
  • 2012 Jefferson County Building Code Supplement

Adopted January 1, 2010

  • 2009 International Residential Code
  • 2009 International Building Code
  • 2009 International Mechanical Code
  • 2009 International Plumbing Code
  • 2009 International Energy Conservation Code
  • 2009 International Fuel Gas Code
  • 2011 National Electrical Code (effective 07/01/11)
  • 2008 National Electrical Code (effective 08/01/08)
  • 2009 Jefferson County Residential Code Supplement
  • 2009 Jefferson County Building Code Supplement

Adopted July 01, 2007

  • 2006 International Residential Code
  • 2006 International Building Code
  • 2006 International Mechanical Code
  • 2006 International Plumbing Code
  • 2006 International Energy Conservation Code
  • 2006 International Fuel Gas Code
  • 2005 National Electrical Code (effective June 1, 2005)
  • 2006 Jefferson County Residential Code Supplement
  • 2006 Jefferson County Building Code Supplement

Adopted January 01, 2004

  • 2003 International Residential Code 
  • 2003 International Building Code 
  • 2003 International Mechanical Code
  • 2003 International Plumbing Code
  • 2003 International Energy Conservation Code
  • 2003 International Fuel Gas Code
  • 2002 National Electrical Code (effective January 1, 2002)
  • 2003 Jefferson County Residential Code Supplement
  • 2003 Jefferson County Building Code Supplement

Adopted October 01, 2001

  • 2000 International Residential Code 
  • 2000 International Building Code 
  • 2000 International Mechanical Code
  • 2000 International Plumbing Code
  • 2000 International Energy Conservation Code
  • 2000 International Fuel Gas Code
  • 2000 Jefferson County Residential Supplement
  • 2000 Jefferson County Building Supplement 

Adopted September 20, 1999

  • 1997 Uniform Building Code 
  • 1997 Uniform Mechanical Code
  • 1997 International Plumbing Code
  • 1999 National Electrical Code
  • 1996 National Electrical Code
  • 1997 Uniform Building Code Supplement

Adopted June 01, 1995

  • 1994 Uniform Building Code 
  • 1994 Uniform Mechanical Code 
  • 1994 Uniform Plumbing Code
  • 1994 Uniform Building Code Supplement
  • 1994 Uniform Mechanical Code Supplement
  • 1994 Uniform Plumbing Code Supplement

October 19, 1994

Roofing restrictions in wildfire zone above 6400 elevation

Adopted May 19, 1993

  • 1993 National Electrical Code Supplement 
  • 1991 Uniform Mechanical Code
  • 1991 Uniform Plumbing Code

Adopted June 19, 1991

  • 1990 National Electrical Code
  • 1988 Uniform Building Code

Adopted February 18, 1986

  • 1985 Uniform Building Code
  • 1985 Uniform Building Code Supplement

Adopted August 19, 1980

  • 1979 Uniform Building Code

Adopted March 10, 1975

  • 1973 Uniform Building Code

Adopted May 24, 1971

  • 1970 Uniform Building Code

Adopted April 01, 1962

  • 1962 Code (Written)

Adopted June 13, 1949

  • BCC resolution adopting the first county Building Code which applied to all zoned, unincorporated, and subdivided land (download document below)

Adopted May 17, 1947

  • BCC Resolution directed County Attorney to prepare a Building Code for adoption.

Adopted February 3, 1941

  • BCC Resolution appointed first Board of Adjustment and First Building Inspection.

Adopted June 3, 1940

  • BCC Resolution requiring Building Permits for commercial buildings only.