Building Code Information

The 2014 National Electrical Code was adopted by the State of Colorado July 1, 2014. The City and County of Broomfield started enforcing this new edition on the same date. We have compiled a list of changes likely to affect residential construction in this 2014 NEC Residential Change Handout.


The City and County of Broomfield has adopted the 2015 International Code series, effective . This means that all permits issued as of April 1st, 2017 will need to have plans designed, reviewed, and approved by the Building Division to meet the 2015 Codes. This will include the architectural plans, structural framing plans, structural foundation plans, soils reports, roof truss plans, and energy code documents. Below is a short summary of significant changes from the 2012 to the 2015 codes.

Building codes are updated every three years through an open consensus process to adapt to changing technology, current methods of construction and in reaction to situations where codes may have failed to protect the public in the past. Building inspection and plan review staff must constantly update their code knowledge and assist builders in meeting the most recent edition of these national codes, as adopted by the City and County of Broomfield.

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2015 Code Significant Changes

Applicable Codes as of April 1st, 2017


  • 2015 International Building Code
  • 2015 International Residential Code
  • 2015 International Plumbing Code
  • 2015 International Fuel Gas Code
  • 2015 International Mechanical Code
  • 2015 International Fire Code
  • 2015 International Energy Conservation Code **
  • 2014 National Electric Code (2017 NEC effective when adopted by the State of Colorado)
  • 2009 ICC A117.1 Accessible and Usable Buildings and Facilities

Snow & Wind Loads


  • Design roof snow load: 30.0 psf
  • Assigned ground snow load: 30.0 psf
  • Design wind speed for single family dwellings: 110 mph, 3 second gust
  • Design wind speed for other structures depends on the risk category (RC) of the building:
  • Wind structural design exposure classification is dependent upon location; either B or C - designer shall assess
  • Asphalt shingles shall be ASTM D3161 Class F or ASTM D7158 Class H or G
  • Frost depth: 36 inches below finished grade

Additional Resources