Data report
70 plumbing permits were filed in Cook County (Suburbs) during 2024 — 61 contractors are named in the record, and these are the most active, ranked by the permits each pulled. Every figure comes from public building-permit records, not self-reported activity.
70 total permits · 61 verified contractors
Year over year
Plumbing permits in Cook County (Suburbs) fell 92% versus 2023, from 914 to 70 permits.
Plumbing leaderboard · 2024
Method
Every figure is drawn from public building-permit records filed in Cook County (Suburbs). A permit is counted once, by the contractor named on it. Installer names are grouped so minor spelling and entity-suffix variations (for example “Inc” vs “Inc.”) count as one company. This is recorded work, not survey data or self-reported claims, and it is reproducible from the public record.
Caveats
A permit reflects a job filed with the local building department. It is a strong proxy for installation activity but is not identical to completed work. Coverage is built from the records each jurisdiction publishes, so a contractor working without listing a name on the permit will not appear here.
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Pastes as: Data: Proven Pros (linked to this report)
<iframe src="https://provenpros.co/embed/report/il-cook-county-suburbs-plumbing-2024" width="100%" height="420" style="border:0;max-width:520px" title="The busiest plumbing contractors in Cook County (Suburbs), IL (2024) — Data by Proven Pros" loading="lazy"></iframe>See the full permit-verified track records behind these numbers: plumbing and other contractors in Cook County (Suburbs), see typical plumbing costs in Cook County (Suburbs), or browse all of Illinois.