Official coverage
The City source covers building permits and is reviewed as a daily source. Every Permit Archive surface that describes it retains the City-required derivative-use disclaimer.
Official source desk
Chicago building-permit data source guide
Chicago Data Portal — Building Permits is published by City of Chicago. Permit Archive reviewed its scope, access route, update pattern, reuse terms, and privacy boundary for the private Stage 1 pilot.
This public guide describes the source. It does not expose permit records, addresses, captured evidence, or contractor profiles.
- Publisher
- City of Chicago
- Official scope
- Building permits
- Update pattern
- Daily
- Access route
- Documented Socrata API
- Delivery
- JSON and official exports
- Reuse record
- City derivative-use terms
Registry contract reviewed July 30, 2026. “Source managed” means the publisher controls the refresh pattern; it is not a freshness guarantee from Permit Archive.
01 / Scope
What this source covers—and what it does not.
Known limit
The City-required derivative-use disclaimer appears below.
Coverage must be read from the source scope—not inferred from the city name.
02 / Handling01 02 03
How the private pilot handles this source.
Use the documented route
The pilot uses the documented socrata api and the source-specific request interval. It does not scrape an interactive portal or bypass access controls.
Filter before storage
Only allowlisted permit facts may cross the boundary. Personal names, contact fields, and contractor home or mailing addresses are denied.
Keep the source trail
Every accepted item must retain source ID chicago_building_permits, its official URL, capture time, content hash, and raw-object location.
03 / Verify
Use the publisher for the current official record.
Chicago Data Portal — Building Permits
Permit Archive is independent and does not replace the source. Current fields, availability, and terms must be checked with the official publisher.