Source registry · City of Chicago
City of Chicago permit coverage
Building permits issued by the City of Chicago from 2006 to present, excluding permits later voided or revoked.
healthyLast recorded sync Jul 20, 2026
- Issuing authority
- Chicago Department of Buildings
- Record origin
- Municipal permit filings published by the issuing authority
- Ingestion method
- Automated sync validated against a fixed field contract
- Terms and license
- City of Chicago Data Portal Terms of Use
- Geographic scope
- Building permits issued by the City of Chicago from 2006 to present, excluding permits later voided or revoked.
- Included permit types
- Building, express, electrical, demolition, sign, porch, extension, and related issued permit categories.
- Earliest available date
- 2006-01-01
- Expected refresh cadence
- Daily
- Source dataset updated
- Jul 20, 2026
- Last successful fixture sync
- Jul 20, 2026
- Reuse notes
- Normalized permit facts are displayed with source attribution. Contact fields and precise coordinates are not republished.
- Public display policy
- Normalized records may be displayed with attribution and privacy minimization.
Known limitations
Missing fields and caveats
These notes travel with the source. A live sync cannot promote itself to healthy if its required field contract breaks.
Known missing or inconsistent fields
- Reported cost is not available for every permit.
- Status and work type can be blank for some permit types.
Public interpretation caveats
- PermitProspect ingests a rolling subset of the available records, not their full history.
- Issue date meaning varies by permit program.
- Reported cost is applicant-supplied and is not verified project cost.