Jefferson County, Colorado Division of Building Safety

Check with your local Fire District regarding your project.  The local fire district has individual authority to enforce fire code standards beyond the county's requirements. Cooperation and coordination with your local fire district early in the process may prevent costly alterations to your project and ensure compliance with all applicable health and safety standards.

Listed below are the codes effective January 1, 2010. Following each code is a link to the code supplement, which includes Jefferson County's amendments to the code. 

Code books are available through the Jefferson County Building Division or the International Code Council Order Division at 1-800-786-4452.

International Residential Codes
2009 International Residential Code
2009 International Fuel Gas Code
2009 International Mechanical Code
2009 International Plumbing Code
2011 National Electrical Code - (effective 07/01/11)
2008 National Electrical Code - (effective 08/01/08)
2009 International Energy Conservation Code

2009 Jefferson County Residential Code Supplement (pdf)

International Building Codes
2009 International Building Code
2009 International Fuel Gas Code
2009 International Plumbing Code
2009 International Mechanical Code
2011 National Electrical Code - (effective 07/01/11)
2008 National Electrical Code - (effective 08/01/08)
2009 International Energy Conservation Code 

2009 Jefferson County Building Code Supplement (pdf)

Listed below are the codes in effect July 1, 2007 thru December 31, 2009. Following each code is the link to the code supplement, which includes Jefferson County's amendments to the code. 

International Residential Codes
2006 International Residential Code
2006 International Fuel Gas Code
2006 International Mechanical Code
2006 International Plumbing Code
2008 National Electrical Code - (effective 08/01/08) 
2005 National Electrical Code - (effective 07/01/05)
2006 International Energy Conservation Code

2006 Jefferson County Residential Code Supplement (pdf)

International Building Codes
2006 International Building Code
2006 International Fuel Gas Code
2006 International Plumbing Code
2006 International Mechanical Code
2008 National Electrical Code - (effective 08/01/08) 
2005 National Electrical Code - (effective 07/01/05)
2006 International Energy Conservation Code 

2006 Jefferson County Building Code Supplement (pdf)

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 Codes in effect 1940-2011

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Last Modified: Apr 5, 2012 07:40 AM