Gas transmission pipeline rupture fires cause significant jet fire impingement and extreme thermal radiation. These intense fires substantially impact nearby structures, far exceeding the severity of standard compartment fires. However, this type of external fire hazard is often neglected in structural safety assessments. This study analyzes an actual pipeline rupture fire incident and performs a consequence assessment of nearby structures. Fire Dynamics Simulator (FDS), computational fluid dynamics-based tool, is used to model the jet fire behavior. The FDS model replicated the consequences on structures similar to the actual damage observed in the incident, with greater accuracy than empirical equations. This study contributes to establishing a direct link between pipeline rupture fire dynamics (jet fire and radiation) and structural damage, supporting consequence-based fire safety. This enables scenario-based consequence assessment of buildings (both existing and new construction) under these extreme fire conditions. The findings enable more rigorous risk quantification and mitigation for pipeline-adjacent communities, reducing the likelihood that future ruptures translate into catastrophic building damage.