Cheyenne follows Wyoming-adopted International Building and Fire Codes, requiring fire sprinklers in most new commercial and multi-family construction but typically exempting one and two-family detached homes.
Cheyenne building safety operates under the Wyoming-adopted International Building Code and International Fire Code through Title 6 of the city code. New commercial buildings, hotels, schools, assembly spaces, and multi-family residential projects above small thresholds generally must install NFPA-compliant fire sprinkler systems. Detached one and two-family homes typically remain exempt, in line with Wyoming amendments to the IRC, though larger luxury homes may trigger limited requirements. Annual inspection, testing, and maintenance follow NFPA 25 and are coordinated with Cheyenne Fire Rescue. Backflow prevention and impact protection rules also apply at service entrances.
Construction without required sprinklers, or failure to maintain and test existing systems, can lead to permit revocation, occupancy denial, fines, and personal liability if a fire causes injury.
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