This project provides a multipatch_convertor() function designed to transform New York City's 3D building model files from ESRI Multipatch format to GeoJSON using the GeoPandas library. For each building, the output will contain separate polygons for building parts of differing heights, each tagged with a height value in meters.
The City's Multipatch building models can be downloaded from the Office of Technology & Innovation (OTI) at https://www.nyc.gov/content/oti/pages/#digital-tools. The files currently available are based on data collected by aerial survey in 2014.
This work is based on the multipatch_convertor script by Bartosz Bończak, which was originally used to create the 3D view for the NYC Energy & Water Performance Map.