Building footprints in New York State are from four different sources: Microsoft, Open Data, New York State Energy Research and Development Authority (NYSERDA), and Geospatial Services. The majority of the footprints are from NYSERDA, except in NYC where the primary source was Open Data. Microsoft footprints were added where the other 2 sources were missing polygons.

Field Descriptions:

NYSGeo Source : tells the end user if the source is NYSERDA, Microsoft, NYC Open Data, and could expand from here in the future

County Name : County name populated from CIESINs. If not populated from CIESINs, identified by the GS

Municipality Name : Municipality name populated from CIESINs. If not populated from CIESINs, identified by the GS

Source: Source where the data came from. If NYSGeo Source = NYSERDA, the data would typically list orthoimagery, LIDAR, county data, etc.

Source ID: if NYSGeo Source = NYSERDA, Source ID would typically list an orthoimage or LIDAR tile

Source Date: Date the footprint was created. If the source image was from 2016 orthoimagery, 2016 would be the Source Date.

Description of each footprint source:

NYSERDA Building footprints that were created as part of the New York State Flood Impact Decision Support Systems https://fidss.ciesin.columbia.edu/home Footprints vary in age from county to county.

Microsoft Building Footprints released 6/28/2018 - vintage unknown/varies. More info on this dataset can be found at https://blogs.bing.com/maps/2018-06/microsoft-releases-125-million-building-footprints-in-the-us-as-open-data.

NYC Open Data - Building Footprints of New York City as a polygon feature class. Last updated 7/30/2018, downloaded on 8/6/2018. Feature Class of footprint outlines of buildings in New York City. Please see the following link for additional documentation- https://github.com/CityOfNewYork/nyc-geo-metadata/blob/master/Metadata/Metadata_BuildingFootprints.md

Spatial Reference of Source Data: UTM Zone 18, meters, NAD 83.

Spatial Reference of Web Service: Spatial Reference of Web Service: WGS 1984 Web Mercator Auxiliary Sphere.

Please contact NYS ITS Geospatial Services at nysgis@its.ny.gov if you have any questions.