Washington DC Building Footprints And Planimetric Features 2019

DC Geographic Information System provides polygon data representing planimetric buildings and infrastructure for Washington D.C. The dataset, created for the D.C. Office of the Chief Technology Officer, was originally captured in 2015 and updated in 2017 and 2019. It includes multiple planimetric layers such as Building Polygons, Road Polygons, and Hydrography Lines.

Use Cases

• Train a segmentation model to identify Building Polygons from aerial or satellite imagery.
• Analyze urban density by calculating the spatial distribution and area of Road, Parking, and Driveway Polygons.
• Map hydrological features for environmental planning using Hydrography Lines and Water Polygons.
• Assess recreational infrastructure by analyzing the location and size of Recreational Areas and Swimming Pools.

Strengths

• Contains multiple updated planimetric layers including 15 distinct feature types.
• Data has a documented update history with versions from 2015, 2017, and 2019.
• Available in multiple geospatial formats including GEOJSON, KML, and through an ARCGIS GEOSERVICES REST API.

Limitations

• Specific row counts and dataset size are unknown, limiting assessment of scale.
• Column schema is unspecified, requiring inspection to understand attribute data for each polygon.
• Geographic coverage is limited to the District of Columbia, not applicable for broader regional analysis.

Provenance

Source

District of Columbia via DC Geographic Information System (DC GIS).

Collection Method

Planimetric features captured and updated as part of the DC GIS program.

Time Range

Originally captured 2015, with updates in 2017 and 2019.

Freshness

Last platform update was 2025-02 05, though the underlying data reflects a 2019 update cycle.

Geography

Washington D.C., District of Columbia.