# Riddiford Roofing Co.: contract amended by City of Chicago, IL ($4,625,000)

**Score:** 45/100

| Field | Value |
|---|---|
| Vendor | Riddiford Roofing Co. |
| Jurisdiction | City of Chicago, IL |
| Agency | Chicago Department Of Aviation |
| Amount | $4,625,000 |
| Description | ROOFING INSPECTION, MAINTENANCE, REPAIR AND REPLACEMENT FOR O'HARE AND MIDWAY INTERNATIONAL AIRPORTS AND VARIOUS CITY LOCATIONS (ROOFING SERVICES) |
| Status | Amendment or revision |
| Approved | 2026-06-04 |
| Term | 2017-11-15 to 2027-06-30 |
| Contract | 64607-10 |

## Why this score
- $4,625,000 contract.

Source: NYC City Record, Cook County, City of Chicago, Montgomery County MD, Texas TCEQ and Province of Nova Scotia open-data procurement datasets (https://data.cityofchicago.org/d/rsxa-ify5). Last refreshed: 2026-11-04T06:05:07.232Z.
From each government's public open-data procurement datasets. Vendor and agency level only: we never store buyer, administrator or vendor-contact names, emails or phone numbers. Nova Scotia amounts are Canadian dollars and, for tenders awarded to several vendors, the tender's total value. Verify awards with the issuing agency.