Larimer County and the City of Fort Collins are partnering to update their respective 2021 adopted building codes at the same time, to make it more convenient for contractors, homeowners and other interested parties to help shape local code rules.

Working with other local building departments, the City and County have created a Code Adoption Review Committee to update local amendments to the 2021 International Building, Residential and related codes. The new codes are projected to take effect January 1, 2022. 

Code Adoption Review Committee meetings are Tuesdays from 10 AM to 1 PM, except the July 6 meeting has been moved to Thursday, July 8, due to the July 4 holiday weekend. The meetings from June 29 through July 13 will focus on energy code changes and local amendments. Updated Code Adoption Schedule

Members of the public may participate electronically in code adoption meetings using Zoom. To join the meetings as they occur, please click here:

Larimer County wants to know your thoughts on building code changes, as we craft our package of local amendments. Please go to our on-line questionnaire and fill out as much or as little as you want, or provide any general comments you wish to make. 

The following 2021 International Codes and local amendments will be reviewed:

  • International Building Code
  • International Existing Building Code
  • International Energy Conservation Code
  • International Swimming Pool and Spa Code
  • International Property Maintenance Code
  • International Fuel Gas Code
  • International Mechanical Code
  • International Plumbing Code
  • International Residential Code
  • NFPA 99- Health Care Facilities Code

International Codes and “Significant Changes” books may be purchased at

A read-only version of each code is accessible at

Larimer County’s current code amendments are located at

For more information, questions, or comments, please contact Larimer County Chief Building Official Eric Fried at or (970) 498-7705.