The Building Polygons dataset represent building footprints of man made structures used for occupation, commercial, service or storage purposes within Tasmania. The building footprints are captured using a combination of aerial imagery, LIDAR, and custodial data using a versioned editing process in ArcGIS Desktop. Historically, either points or polygons were used to depict building locations, with the option defined by the building size. To provide a more flexible dataset, polygons are the only feature type now used in the dataset. Previous point features were converted to 2m x 2m square polygons, as part of the data model update in October 2022. As such, these square polygons do not represent the associated building footprint but are used to depict spatial location only. Building types include: Residence, Feature (those shown in red on the Tasmanian Towns Street Atlas), Shed, Ruin, Commercial, Industrial, Education, Health, Emergency, Accommodation, and Amenity.

Building polygons were originally sourced from 1:25,000 photogrametric maching plots and are now compiled from aerial photography, photogrammetric data, cadastral information, satellite imagery, LiDAR, custodial data, and 1:25 000 topographic raster images.

Completeness: Building Polygons exist for all of Tasmania but due to the dynamic nature of buildings, this dataset is incomplete. This dataset is continually being updated on a map tile basis to coincide with the TASMAP and Topographic Aerial Imagery revision programs.