Building Footprints
Definition
The extent of a building in 2 dimensional space
Includes a unique identifier and other information derived from LIDAR (e.g. max height)
Illustration
On left: Oblique view of Green St facing north between Columbus and Powell ( Imagery: © 2017 Google; Left Panel Map Data: © 2017 Google)
On right: building footprints for the same block
Authority
SFGIS in the Department of Technology manages data collection and processing from LIDAR
LIDAR data is provided by a third-party and is updated every ???
From this data, SFGIS derives the footprints and assigns unique identifiers as well as additional derived statistics about the building (e.g. min, max and median height)
Information about buildings is captured by other departments including Building Inspection, SF Environment, SF Planning and the City's Real Estate Division among others.
Building footprints do not include administrative data about a building
They can be related to administrative data spatially and via unique identifiers
Use
To relate other administrative records to a structure
To clarify among administrative datasets what specific structure is being referenced
To improve the addressing model so that address numbers reference a building, not just a parcel
Accepted values
Footprints are not currently updated as new buildings are constructed
For those buildings constructed before 2010, you can use the unique identifier
sf16_bldgid
Reference Datasets
Is anything wrong, unclear, missing?
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