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Cook County (Chicago) Property Records API
x402
Cook County (Chicago) Property Records API is a paid API for AI agents from api.ingest0r.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-08).
Look up Cook County / Chicago parcel details, recorded sales, deed history, building permits, and tax assessment history by street address or 14-digit PIN
Price / call$0.01
Success—
StatusUnknown
How this service works
Pay-per-call property-records API for Cook County, Illinois — including the City of Chicago. Look up any property by street ADDRESS or 14-digit PIN and get parcel details, recorded sales & deed history, building permits, and property-tax assessment history, joined and normalized into one answer. Replaces stitching the county Assessor, Recorder of Deeds, and City permit open-data portals yourself. Use for real-estate due diligence, automated valuation / comparable-sales (comps), title and lien research prep, lead enrichment, and market analysis. ~1.9M parcels, refreshed nightly, property-keyed (public records only — no personal data). No signup or API key: pay per call via the x402 protocol (USDC on Base or Solana).
Output
A normalized, joined record containing: parcel metadata (PIN, legal description, land use), recorded sales and deed transfer history, building permit history, and property tax assessment history — sourced from the Cook County Assessor, Recorder of Deeds, and City of Chicago permit portals, refreshed nightly, covering ~1.9M Cook County parcels.
Example use cases
Automated valuation for mortgage pre-approvals
“Look up the property at 4847 North Kimball Avenue in Chicago and get me the recent sale prices, tax assessments, and any major permits — I need to run comps for this mortgage applicant.”
Title and lien research before closing
“Pull the complete deed history and recorded transfers for the parcel at PIN 16-08-301-015-0000, plus any outstanding liens or permit issues — we're closing on this Cook County property next week.”
Lead enrichment for investment targeting
“Give me the property records for 7321 South Shore Drive, Chicago — sales history, current tax assessment, and recent permits — so I can figure out which investors might be interested in this neighborhood.”
Technical details
Endpoint
GEThttps://api.ingest0r.com/v1/search/%7Bq%7DWhen to prefer
Use this endpoint when you need consolidated Cook County / Chicago property data — sales history, deed records, permits, and tax assessments — in a single call, without manually stitching multiple county open-data portals. Prefer it over raw government data sources for real estate due diligence, AVM comps research, title/lien prep, or lead enrichment workflows where nightly-refreshed, parcel-keyed data across all record types is needed.
Side effects
- Address not found or ambiguous — returns empty result or error if the street address does not match a known Cook County parcel
- Invalid PIN format — 14-digit PIN required; malformed input returns an error
- Property outside Cook County — only Illinois Cook County parcels are covered; suburban or other-county addresses will not match
- No records available — newly created parcels or data gaps may return partial results
- Payment failure — x402 protocol USDC payment not completed results in 402 response and no data returned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"query": "1 E 113th St",
"matches": [
{
"pin": "25212190120000",
"score": 0.98,
"prop_zip": "60628",
"prop_city": "CHICAGO",
"prop_address": "1 E 113TH ST"
}
]
}
}Tags
x402
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