PermitStack indexes 736,168 building permits issued in Cook County, Illinois, with 86,585 issued in the last 12 months alone. Search by address, contractor, category, and date via our free REST API.
Most common permit types issued in the last year.
Drill into the most common permit categories in Cook County.
The most active contractors by permit volume in Cook County, with a profile of each one's permit history. Counts are permits we hold for Cook County.
Every permit we hold for one Cook County address (roof, HVAC, solar, additions, with dates and contractors) in a single call to /v1/property/history. Used by lenders for collateral review, insurers for roof and system age, and real estate teams for due diligence.
The 10 most recent permits issued in Cook County, Illinois. Full dataset available via REST API.
| Issued | Permit # | Address | Category | Description |
|---|---|---|---|---|
| 2026-10-05 | 20197492 | 3734 S 61ST CT | Demolition | Garage |
| 2026-10-05 | 20196556 | 17137 RIDGEWOOD AVE | Demolition | vacant |
| 2026-10-05 | 20197073 | 1457 S 6TH AVE | Demolition | Garage |
| 2026-10-05 | 20197154 | 2622 WOODLAWN RD | Demolition | single family home |
| 2026-10-05 | 20197851 | 1116 DOUGLAS AVE | Demolition | private garage |
| 2026-10-05 | 20195221 | 6504 CONRAD AVE | Demolition | vacant |
| 2026-10-05 | 20194192 | 1115 N TAYLOR AVE | Demolition | Garage |
| 2026-10-05 | 20195244 | 2981 W 86TH ST | Demolition | unknown |
| 2026-10-05 | 20197871 | 2304 HUTCHINSON RD | Demolition | private garage |
| 2026-10-05 | 20195123 | 9976 W 144TH ST | Demolition | Residential |
Query Cook County, Illinois permits with a single HTTP request. Returns JSON with address, category, status, dates, and full description.
# Search Cook County permits issued in the last 30 days curl -H "X-API-Key: YOUR_KEY" \ "https://api.permit-stack.com/v1/permits/search?jurisdiction=Cook%20County&state=IL&issued_after=2026-09-06"
The official record sets behind this page, with the date each one's data runs through.
| Record set | Source | Permits | Data through | Note |
|---|---|---|---|---|
| Building permits | open data (Socrata) | 717,084 | 2026-09-30 | |
| Asbestos & Demolition | open data (Socrata) | 18,612 | 2026-10-05 | |
| Asbestos Demolition | open data (Socrata) | 472 | 2012-11-15 | The source has stopped publishing. |
Related coverage in Illinois and nationwide.
We ingest Cook County's official permit records directly from 3 official record sets, each listed under Sources on this page and normalize them into a consistent JSON schema across our U.S. jurisdictions.
The newest permit we hold for Cook County, Illinois is dated October 5, 2026. We re-read this source on a nightly schedule and publish the date the data runs through rather than the date we last polled. Some cities publish permits days after they are filed.
Yes — search Cook County permits free in the browser, no signup needed. The API needs a free key (100 requests per day, no credit card).
Yes. CSV export is available on every plan, including free, with the row cap rising by tier. Webhooks (Developer plan and up) push new permits after each nightly ingest.
Free tier covers 100 requests per day. No credit card required.
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