Illinois Building Permit Data & Contractor API
PermitIntel's Illinois dataset spans at least 158 jurisdictions, with 3.5M+ permits on record. Permit type, value, and status are available today. Contractor attribution for Illinois is in the pipeline.
Permits: what that means here
Full permit records: address, type, value, dates, status. Contractor resolution is not live yet. API and bulk export ready.
What you can do with Illinois data
Products available for this state, based on current coverage tier.
Permits API
Query permits by address, contractor, type, value, or date range. Declared value is returned where the jurisdiction publishes it.
Bulk Data
The full dataset delivered to your warehouse or bucket on a cadence you set. Enterprise contract, set up directly.
Not yet available for Illinois
- Contractor Intelligence - contractor matching in progress
- License Verification - contractor matching in progress
- Monitoring Webhooks - contractor matching in progress
- Supply Intelligence - contractor matching in progress
Illinois permit data on record
| Metric | Count on record |
|---|---|
| Total permits | 3,507,260 |
| Jurisdictions ingested | 158 |
| Permits in last 12 months | 41,969 |
| License-resolved permits | 30,940 |
| Distinct licensed contractors | 2,830 |
Counts are as of October 17, 2026. Data reflects records PermitIntel has ingested and is not represented as a complete record of all permits issued in Illinois.
Frequently asked questions
Where does Illinois permit data come from?
Data is drawn from county permit portals and municipal systems across Illinois. Some jurisdictions update daily; others lag by a few weeks.
How current is the Illinois data?
Records are updated as sources publish new data, typically weekly. The numbers on this page reflect the last nightly stats generation.
Do you match Illinois permits to contractor licenses?
Illinois is currently at the Permits tier. License-board matching is planned as contractor data matures for this state.
Can I access Illinois permit data via API?
The Permits API is available for Illinois now, with warehouse delivery on request. Pull by address, jurisdiction, permit type, or date range.
How many Illinois jurisdictions are covered?
At least 158+ Illinois jurisdictions are in the dataset. Coverage is concentrated where portals are accessible and grows as new sources are added.
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PermitIntel covers 51 states and counting. See the full coverage map.