When was Indianapolis Built?

Matching building footprints shapefile published by IndyGIS to property tax assessment data for spring 2017 (via Renew Indianapolis) nicely captures the geographic variation of building age in Indianapolis. Because it is the tax data that contains the year of construction, only buildings on parcels in that data are included here:


Here’s a summary of the the construction year data for the entire city, and also by each of the nine townships:

Distribution of Building Age in Indianapolis
Building Age by Township: