Building Codes

Adopted Codes

The City of Longmont has adopted the 2021 International Codes.  Effective January 1, 2022.

• Copy of Ordinance Adopting the 2021 Edition of the International Codes
• Copy of Ordinance Adopting the 2021 Edition of the International Fire Codes (PDF)
• Previous Codes

• Climatic & Geographic Design Criteria for IBC and IRC [PDF]

If you have any questions about the Adopted Code, please contact Building Inspection at (303) 651-8332 or building.inspection@longmontcolorado.gov

View additional information on the Carbon Monoxide detector requirements. [PDF 56KB]

National Electrical Code, 2023 Edition

Adopted 07/24/2024 – Effective Date 07/24/2024, including appendices, published by the National Fire Protection Association, that code to have the same force and effect as if set forth in this chapter in every particular, save and except such portions as are deleted, modified, substituted or amended in this chapter. Longmont’s adopted amendments for the NEC can be obtained at National Electrical Code Adopted Amendments [PDF 672 KB]

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Previous Codes

Copy of Ordinance adopting the 2018 Edition of the International Codes

Copy of Ordinance Adopting the 2015 Edition of the International Codes [PDF]

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