Visualizations and Storytelling in Housing

A series of visualizations and experimental tools around housing at a granular level

City Growth, Urban Sprawl

How have cities grown in the last century? How does each cope with population change?

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San Francisco


Comparing Property Assessments

What patterns can be uncovered by visualizing assessments on every single building?

Adding a City to for City Growth

I'd be happy to add your city in, and chances are, I've tried. Most cities do not have both building shapefiles and datafiles with building age on their open data portal. If they do, they lack an id connecting both.

If you provide me the following (send me an email to I will create an animated map. If you don't know what these are, you can ask your city's open data team: