Wyoming, Crook County HVAC Permit Regulations and County Ordinances for Unincorporated Areas
Crook County Building & Safety Jurisdiction
Crook County, Wyoming, does not have a county-wide building department, nor has it adopted county-wide building codes or building permit requirements for private residential, commercial, or industrial construction. Consequently, the county does not issue building permits, perform construction inspections, or issue certificates of occupancy for these types of projects.
Rules for Properties in Unincorporated Areas
For properties located in unincorporated areas of Crook County, there are no county-level HVAC permit requirements because the county does not enforce building or mechanical codes. While the county does not mandate permits, it recommends that all building construction—including HVAC installations—voluntarily comply with the codes and standards adopted by the State of Wyoming, such as the International Mechanical Code and the International Fuel & Gas Code.
Although the county does not require permits, property owners and contractors should be aware of the following:
- State Requirements: Certain aspects of HVAC work, particularly those involving electrical components or specific fuel-gas installations, may be subject to state-level regulations overseen by the Wyoming Department of Fire Prevention and Electrical Safety.
- Federal Requirements: Technicians handling refrigerants must comply with federal EPA Section 608 certification requirements, regardless of local or county permit rules.
- Incorporated Areas: If a property is located within an incorporated municipality (such as the City of Sundance), that specific city may have its own building codes, permit requirements, and contractor licensing rules that differ from the unincorporated county regulations.
Resources to Learn More
Note: The following state-wide building codes and regulations apply universally to all jurisdictions within Wyoming, including Crook County.
Wyoming Hvac Legislation, Codes, and Guidelines
State-Level Building Codes and Legislation for HVAC in Wyoming
Wyoming does not have a single, mandatory statewide building code that applies to all construction. Instead, the state adopts specific codes that are primarily enforced at the local jurisdictional level (cities and counties). Under Wyoming Statute § 35-9-106, the Wyoming Department of Fire Prevention and Electrical Safety (WDFPES) is authorized to establish minimum fire and electrical safety standards for buildings. While the state adopts these standards, local jurisdictions may choose to adopt and enforce them, often with local amendments.
As of June 28, 2024, the State of Wyoming has adopted the 2024 editions of the International Codes (I-Codes). These codes, which govern HVAC, mechanical, and fuel gas installations, include:
- 2024 International Mechanical Code (IMC)
- 2024 International Fuel Gas Code (IFGC)
- 2024 International Building Code (IBC)
- 2024 International Existing Building Code (IEBC)
- 2024 International Fire Code (IFC)
The Wyoming Department of Fire Prevention and Electrical Safety (WDFPES), led by the State Fire Marshal, is the primary agency responsible for adopting these standards. The WDFPES also conducts plan reviews and inspections for specific types of buildings as mandated by Wyoming Statute § 35-9-108, including state-owned or leased buildings, schools, multi-story public buildings, and public buildings over 5,000 square feet. For most other residential and commercial projects, enforcement is handled by local building departments, which are required by state law to adopt or maintain standards that at least meet the statewide standards if they choose to act as a local enforcement authority.
Resources to Learn More