Wyoming Building Codes

Wyoming does not have a mandatory statewide energy code. For a list of jurisdictional energy code adoptions, please click here. Wyoming’s building codes are primarily governed by the International Building Code (IBC) and International Residential Code (IRC), with some modifications to suit the state’s specific needs and climate conditions. These codes help ensure safe and sustainable construction practices in Wyoming, addressing factors like snow loads, wind resistance, and energy efficiency. Local jurisdictions may also have their own building codes in addition to the state standards.

Current Building Codes of Wyoming

The current Commercial Building Code of Wyoming as of 2021 adheres to the 2021 International Building Code (IBC 2021) without amendments. This international fire code sets the minimum requirements to safeguard public health, safety, and general welfare through structural strength, stability, sanitation, adequate light and ventilation, and safety to life and property from fire and other hazards attributed to the built environment. It applies to all commercial buildings in Wyoming, ensuring consistent standards across the state for commercial construction and renovations.

Cheyenne has adopted the 2009 IECC.

The current energy provisions are contained in Appendix Chapter 53 of the 1991 Uniform Building Code, which references the 1989 Council of American Building Officials (CABO) Model Energy Code (MEC). This national electrical code may be adopted and enforced by local jurisdictions.

Current Residential Codes of Wyoming

The current Residential Code of Wyoming is based on the 2021 International Residential Code (IRC 2021), which has not been amended for local application. This code provides comprehensive regulations for residential buildings to ensure safety, health, and welfare for occupants. It covers construction, alterations, movement, enlargement, replacement, repair, equipment, location, removal, and demolition of detached one- and two-family dwellings, as well as townhouses not more than three stories in height. This ensures that residential construction in Wyoming meets modern standards for structural integrity electrical safety, energy efficiency, and fire prevention and safety.

Climate Zones: 5B, 6B, 7

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Code Adoption and Change Process

Here are the current details regarding the code change plan review, process, code change cycle, and the next code plan review and update for Wyoming:

Code Change Process

The code change plan review process in Wyoming involves public and professional input to ensure that codes reflect current construction practices and safety norms. Amendments and updates to the building codes are typically reviewed and recommended by various committees and boards before being officially adopted

Code Change Cycle

Wyoming international mechanical code does not have a fixed code change cycle; instead, updates are made as necessary. This approach allows the state to adapt national electrical code more fluidly to new safety standards and technological advancements in construction and building design.

Next Code Update

The next update to the fire prevention and building codes in Wyoming has not been explicitly scheduled. Updates to gas code are generally determined by the need for new safety and fire prevention measures, technological improvements, or changes in federal regulations that need to be reflected in state codes.

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History

Date	Description
2021	Wyoming adopts the 2021 International Building Code (IBC), International Residential Code (IRC), and International Energy Conservation Code (IECC).
2018	Wyoming adopts the 2018 editions of the IBC, IRC, and IECC. These include updates to structural, fire safety, and energy efficiency standards.
2015	Adoption of the 2015 IBC, IRC, and IECC. This update includes new provisions for building safety and energy efficiency, reflecting advancements in construction.
2012	Wyoming updates its building codes to the 2012 IBC, IRC, and IECC, emphasizing improved energy efficiency and safety in both residential and commercial buildings.
2009	The state adopts the 2009 editions of the IBC, IRC, and IECC, incorporating significant updates in energy efficiency requirements and safety measures.
2006	Adoption of the 2006 IBC, IRC, and IECC, marking a significant step toward national standards in building safety and energy efficiency.
2003	Wyoming moves to align with the 2003 editions of the IBC, IRC, and IECC, integrating more comprehensive safety and energy conservation measures.
2000	Initial adoption of the International Building Code (IBC), International Residential Code (IRC), and International Energy Conservation Code (IECC).