Wednesday, December 18, 2024

Sanborn Fire Maps



Sanborn maps were designed to help insurance companies assess the fire risk of individual properties. They were highly detailed, showing the size, shape, and construction of buildings, as well as the materials used in their construction. This information was used by insurance companies to calculate the premium that a property owner would have to pay for fire insurance. The maps are valuable for documenting changes in the built environment of American cities over many decades.


 “Planners use the maps to study historic urban planning designs. Historic preservationists use the maps to understand the significance and historical evolution of buildings, including their historic uses and building materials in conservation and rehabilitation efforts. Demographers and urban geographers use them to study patterns of growth and migration of populations. Environmental scientists also use the maps for historical analysis of properties, as the maps often showed the locations of gas stations, drycleaners, and other potential sources of soil and groundwater contamination.” (wikipedia)

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