Building Code Information

The City and County of Broomfield has adopted the 2021 International Code series. This  includes  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 2018 to the 2021 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.

Broomfield Title 15 Bldg Municipal Code

The 2021 Codes became effective  April 15th, 2023. Below are some of the fee changes that were approved:

  1. Re-inspection Fee: Changing from $75 to $150
  2. We will be honoring the new Building Data Valuation totals for new houses.

2021 Code Significant Changes

Current Building Code 


The City and County of Broomfield observes the 2021 IBC/IRC International Codes and the 2023 NEC* National Electrical Code.


Applicable Codes as of April 15th, 2023

  • 2021 International Building Code
  • 2021 International Residential Code
  • 2021 International Energy Conservation Code
  • 2021 International Existing Building Code
  • 2021 International Fire Code
  • 2021 International Fuel Gas Code
  • 2021 International Mechanical Code
  • 2021 International Plumbing Code
  • 2021 International Swimming Pool and Spa Code
  • 2020 National Electric Code*
  • 2017 ICC A117.1 Accessible and Usable Buildings and Facilities
  • Broomfield Title 15 Bldg Municipal Code


2021 Code Adoption Information 


2023 NEC Adoption Information**

Effective  August 1, 2023, Broomfield will begin enforcing the 2023 National Electrical Code (based on the State of Colorado adoption). All permits issued as of August 1, 2023, will need to comply with the 2023 NEC. 

The link below is a summary of the significant changes to the 2023 NEC.
2023 NEC Significant Changes

  • **All permits issued on or after August 1, 2023 will be under the 2023 NEC.
  • Inspectors will field verify items
  • Please update all of your "cover sheets and electrical plans to the 2023 NEC and provide an Electronic version (opposed to a hard copy) to the Building Department ASAP please. The existing hard copies will stay in the field and the inspectors will field verify items for the 2023 NEC.

Snow & Wind Loads

  • Design roof snow load: 30.0 psf
  • Assigned ground snow load: 30.0 psf
  • Design wind speed for 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
  • IBC wind designs need to meet requirements out of the ASCE 7-16 and IRC wind would be the 142 Vult or 110 Vasd
  • Asphalt shingles shall be ASTM D3161 Class F or ASTM D7158 Class H or G
  • Frost depth: 36 inches below finished grade