Wyoming Statewide Rule

Wyoming Fire Code Propane and LP-Gas Storage Standards

Some RestrictionsApplies statewide across Wyoming (2026)

Key Facts

National standard: NFPA 58 for LP-gas
State code: IFC for public buildings only
Statewide code: None for all structures
Fire protection: Over 4,000 gal aggregate
Documents: Single container over 2,000 gal

Last verified: August 21, 2026Source: UpCodes

Summary

Propane and LP-gas storage in Wyoming follows NFPA 58 and, for regulated occupancies, the State Fire Marshal's adopted fire code. Wyoming has no statewide building code for all structures, so container siting, separation, and permits depend on the fire marshal's rules and any local code adoption.

(d) The standards for liquefied petroleum gas installations shall be the current edition of NFPA 58 Liquefied Petroleum Gas Code and ANSI Z223.1/NFPA 54 National Fuel Gas Code. To the extent the standards for liquefied petroleum gas conflict with the standards prescribed by the International Fuel Gas Code, the NFPA 58 Liquefied Petroleum Gas Code and ANSI Z223.1/NFPA 54 National Fuel Gas Code control.

Source: UpCodesView official code

Full Breakdown

Wyoming has no statewide building or fire code that applies to all structures. The Wyoming Department of Fire Prevention and Electrical Safety (State Fire Marshal) adopts the International Fire Code, including its liquefied-petroleum-gas provisions, for public buildings and plan review, and NFPA 58 is the recognized national LP-gas standard. Typical NFPA 58 and IFC thresholds require fire protection for containers over 4,000 gallons aggregate water capacity, submitted construction documents for single containers over 2,000 gallons, and separation of very large multi-container installations. Where a city or county adopts a fire code, local permits apply; residential tank installations generally follow NFPA 58 through the installer.

Violations & Penalties

LP-gas installations that violate applicable fire-code or NFPA 58 requirements, or that lack required permits where a code is adopted, may face stop-work orders, fines, and refusal of fill service by distributors.

Frequently Asked Questions

Do residential propane tanks need permits in Wyoming?

Residential tanks under 2,000 gallons generally follow NFPA 58 through the installer. Permits apply where a city or county has adopted a fire code; many rural areas have none.

Can a Wyoming city ban propane storage?

Cities that adopt a fire code may regulate or add stricter LP-gas standards, but Wyoming has no statewide code that a city must follow or can weaken.

Sources

See something wrong?

Help us keep this page accurate. If you notice an error or outdated information, let us know.