Select a date range and click Load Permits to
explore.
⚠ Estimates, not audited data. Units parsed via regex
from permit descriptions. Excludes revisions, foundation-only, and
sub-permits. Permits >1,000 units capped to 0. Deduped by PIN within
each year. For accurate, human-audited data see
Chicago Cityscape. These estimates capture ~96% of the actual counts reported in
this 2025 article from Steven Vance
(96–101% per year, 2022–2024). Source:
Chicago Data Portal.
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Load permits first, then switch here to see trends over time.