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Public-record evidence Launching in Cook County, IL

Check the public record before your deadline.

CivicDelta matches official government records to the property, facility or contractor you’re deciding about. Each report states what those records say, what they can’t tell you, and the deadline you’re working against. First up: Cook County property tax appeals.

  • Every figure carries its dataset, record ID and capture date.
  • One flat price per report, and you can pay only after coverage is confirmed.
  • “No records found” is reported as an answer, never as clearance.
Three domains

Eight reports, grouped by what you’re deciding about

Every report uses the same method, the same citation format and the same limits statement, whichever domain it’s in. We open one jurisdiction at a time and sell a report only where our data covers you.

Property

Homeowners, buyers, attorneys and inspectors

Health & Care

Families choosing care; patients checking a surgeon

Hiring & Education

Homeowners hiring contractors; parents choosing programs

Prices are per report. Planned reports are not for sale. Free tools and official-lookup guides sit alongside the paid reports.

The data foundation

Ten official datasets, counted against their publishers

Before we load a dataset, we ask the publisher’s own API how many records to expect, and a load that doesn’t match is blocked. These are the counts for the years we keep.

Figure 1

Assessed values and home characteristics make up 52% of the 26.5 million records

Records per dataset, for the years CivicDelta keeps. Bars share one scale starting at zero.

  1. Assessed values uzyt-m557 · 2023–20267,455,734
  2. Residential characteristics x54s-btds · 2023–20264,409,607
  3. Parcel addresses 3723-97qp · 2025–20263,727,473
  4. Board of Review appeals 7pny-nedm · 2022–20251,970,286
  5. Parcel universe pabr-t5kh · 20261,863,665
  6. Condominium characteristics 3r7i-mrz4 · 2023–20261,829,213
  7. Parcel sales wvhk-k5uv · 2015–20261,210,856
  8. Assessor appeals y282-6ig3 · 2023–20261,150,106
  9. Building violations 22u3-xenr · all years2,027,808
  10. Building permits ydr8-5enu · all years847,122
All ten datasets26,491,870
Highlighted bars: assessed values and characteristics (13,694,554 records). n = 10 datasets. All ten serve the Property domain. Source: publisher record counts via Socrata API, verified 13 Sep 2026 · Table view and dataset links
10 / 10

datasets passed a live field and type check

Contract probe, 13 Sep 2026
0

values rejected in 39,000 sampled rows

Sampled dry runs, 13 Sep 2026 (0.15% of records)
0

rows published so far; full loads are pending

Full loads not started, 13 Sep 2026
Pending

terms-of-use review for all ten sources

Required before any paid use
Our standard

What you can hold us to, in every domain

  1. Coverage before payment

    We confirm your address or entity is covered before you can pay.

  2. Every figure cited

    Publisher, dataset, record ID and capture date sit beside every number.

  3. Absence is not clearance

    “No records found” never means “no problem.” Every report says so.

  4. Records, not accusations

    No scores or grades about named people or businesses. Dated records only.

  5. One price, stated up front

    A single number per report. A clean result is declared a valid outcome before you buy.

  6. The free source, linked

    Each report links the official lookup it builds on, so you can check it yourself.

Read the full method

CivicDelta Pro

One workspace for professionals who order across domains

Prepaid credits, bulk ordering and client or matter labels, for attorneys, inspectors and property managers. An attorney who orders Permit History can order a Contractor Record from the same account.