Chicago Cityscape last integrated the Chicago zoning map in July 2020. We update it every two months, which would put the next update in October 2020. (It's three months by the calendar, but two months considering that City Council doesn't meet in August.)

Since then, 25 changes were made, comprising new planned developments and splitting some zoning districts into two different ones. That means Chicago is now divided into 13,635 distinct zoning districts 

The map shows the 25 new zoning districts created from existing zoning districts (in green).

Although Chicago has only 81 zoning classifications, plus the "PD" zoning classification, for planned developments, these are widely scattered across the city and in non-contiguous areas. For example, there are several swaths of RS-3 zoning districts (a zoning classification that allows only single-unit houses) with "spot" zoning districts within them, for RT-4, RM-5, and some others. 

These two additional zoning districts allow multi-unit housing and are necessary either because the RS-3 was applied to existing multi-unit housing, preventing permitted renovations, or to allow a new multi-unit house to be built.

Every time you look up an Address Snapshot in Chicago you'll get a Zoning Assessment; the date of the most recent zoning map update is always shown, and you can click a button to get a limited look back at past zoning districts for that property.

Are you looking for the right place to locate a building or business, but don't know what zoning classifications allow it or where the right zoning districts are? Use our Site Selector tool.