Trade report · Cook County, Illinois
Plumbing Permits in Cook County (Chicago)
Plumbing building permits issued by the City of Chicago, counted from the official record — totals, reported value, and the biggest plumbing projects.
Source: City of Chicago open data — building permits. Source last updated: October 17, 2026 · Our last pull: October 17, 2026 · Figures are as reported by the City of Chicago.
Coverage: this report covers building permits issued by the City of Chicago, the largest jurisdiction in Cook County. Suburban Cook County permits are published by separate municipalities and are not in this feed yet, so county totals here are Chicago totals — labeled as such, never blended.
PermitsByCounty data, Cook County (Chicago), September 2026 · Source: City of Chicago
Questions, answered from the data
How many plumbing permits were issued in Chicago in September 2026?
271 plumbing permits were issued in Chicago in September 2026, with a reported project value of $48,652,240, as reported by the City of Chicago.
Plumbing permits by month
| Month | Permits issued | Reported value |
|---|---|---|
| October 2026 (to date) | 112 | $26,387,449 |
| September 2026 | 271 | $48,652,240 |
| August 2026 | 273 | $64,497,317 |
| July 2026 | 239 | $114,948,254 |
| June 2026 | 237 | $110,788,344 |
| May 2026 | 241 | $61,442,588 |
| April 2026 | 261 | $82,733,508 |
| March 2026 | 260 | $144,240,461 |
| February 2026 | 204 | $73,441,587 |
| January 2026 | 216 | $82,568,711 |
| December 2025 | 201 | $119,341,065 |
| November 2025 | 194 | $47,149,300 |
| October 2025 (from Oct 17) | 111 | $23,175,172 |
Biggest plumbing projects — last 12 months
| Project (permit #) | Trade | Reported value | Issued |
|---|---|---|---|
| 251 E Huron St #101077376 SELF CERT 2019 CBC: INTERIOR DEMOLITION OF EXISTING LEVELS 14 AND 15 OF THE GALTER PAVILION. WORK INCLUDES … | Plumbing | $62,000,000 | 2025-12-22 |
| 400 S La Salle St #101081181 DDS 2019 CBRC: PHASE 2 OF 3: INFRASTRUCTURE UPGRADES. CONVERT 7 STORY OFFICE BUILDING TO A DATA CENTER. REI… | Plumbing | $51,100,000 | 2026-07-06 |
| 100 W Randolph St #101077075 DDS 2019 CBRC: INTERIOR ALTERATIONS TO LEVELS B2, B1, L1, AND L2 FOR BUILDING SHARED AMENITY SPACE. WORK TO… | Plumbing | $50,118,593 | 2026-03-16 |
| 19 S La Salle St #101069926 DDS 2019 CBRC: INTERIOR AND EXTERIOR ALTERATIONS TO EXISTING 17 STORY OFFICE BUILDING TO CONVERT IT TO A MI… | Plumbing | $50,000,000 | 2026-06-22 |
| 5207 S Harper Ave #101074867 SC / 2019 CBC: INITIAL TENANT BUILDOUT ON THE 11TH, 12TH, AND 13TH FLOOR OF AN EXISTING OFFICE BUILDING FOR… | Plumbing | $33,000,000 | 2026-01-28 |
| 10000 W Ohare St #101077694 SPR 2019 CRBC: INTERIOR ALTERATIONS TO EIGHT (8) RESTROOMS THROUGHOUT THE O'HARE INTERNATIONAL AIRPORT… | Plumbing | $17,500,000 | 2026-07-15 |
| 210 N Peoria St #101069821 DDS 2019 CBRC: REVISION TO PERMIT 101063371. INCLUDES REORIENTING STAIRS, MODIFICATIONS TO RESTROOMS, ELIMI… | Plumbing | $17,000,000 | 2026-04-21 |
| 700 W Brompton Ave #101080970 DDS 2019 CBC: REVISION TO PERMIT# 101069330 DUE TO CHANGES TO LEVEL 4 CLASSROOM LAYOUT, ADDITIONS TO DOOR R… | Plumbing | $15,900,000 | 2026-05-08 |
All Cook County trades: full county report.