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Is there any public or private sources of LIDAR data for the city of Chicago? Searching online has not lead me to any sources, and I am unsure how the commercial world of LIDAR works.

The LIDAR point spacing would need to be at an interval that I can use to estimate the building height from the footprints.

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up vote 3 down vote accepted

Does Chicago belong to a council of governments? Often a COG facilitates LiDAR contracts by pooling together funds from participating municipalities. Otherwise you might try the City of Chicago's GIS department:

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Thanks, both are good suggestions. I emailed to inquire. – djq Jul 13 '11 at 17:52

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