From which entity did the earliest requirements to install fire sprinkler systems originate?

The earliest requirements to install fire sprinkler systems primarily originated from insurance companies. Historically, insurers recognized that the risk of fire could lead to substantial financial losses. To mitigate these risks, they began to advocate for the installation of fire protection systems, including sprinklers, in buildings to reduce the likelihood and impact of fire damage.

Insurance companies often provided discounts or lower premiums for properties equipped with such systems because the presence of sprinklers significantly lowers the risk of extensive damage from fires, making buildings safer investments. This trend influenced building practices long before government regulations or building codes were established, highlighting the critical role that insurers played in shaping fire protection measures.

Over time, local governments and building codes began to incorporate safety regulations, but the initial push for fire sprinkler installation came from the need to protect financial interests associated with fire risk.