Here is one for Brooklyn: http://bklynr.com/block-by-block-brooklyns-past-and-present/ http://bklynr.com/block-by-block-brooklyns-past-and-present/ I publishe

Here is one for Brooklyn: http://bklynr.com/block-by-block-brooklyns-past-and-present/ http://bklynr.com/block-by-block-brooklyns-past-and-present/ I published some instructions on how to generate such a map using the recently released PLUTO data: http://bdon.org/2013/06/29/working-with-pluto-and-pad/ http://bdon.org/2013/06/29/working-with-pluto-and-pad/ To the best of my knowledge, San Francisco doesn't have a public building age dataset. There is a building footprint dataset on https://data.sfgov.org/ https://data.sfgov.org/, but the quality of the shapes isn't very good.