County report · Illinois
Building Permits in Cook County, Illinois
Every building permit issued by the City of Chicago — the county's largest jurisdiction — counted, valued, and sorted by trade. Free, and updated daily.
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 building permits were issued in Chicago in September 2026?
3,179 building permits were issued in Chicago in September 2026, with a reported project value of $684,261,494, as reported by the City of Chicago.
How many building permits were issued in Chicago in the last 12 months?
31,746 building permits were issued in Chicago in the 12 months ending October 2026 (October 17, 2026), with a combined reported project value of $10,958,253,155, as reported by the City of Chicago.
What is the most common type of building permit in Chicago?
Electrical permits are the most common classified type: 7,675 issued in the last 12 months (24.2% of all permits), as reported by the City of Chicago.
Permits by month
| Month | Permits issued | Reported value |
|---|---|---|
| October 2026 (to date) | 1,547 | $417,559,242 |
| September 2026 | 3,179 | $684,261,494 |
| August 2026 | 3,044 | $617,339,221 |
| July 2026 | 2,923 | $1,320,281,430 |
| June 2026 | 2,900 | $649,265,506 |
| May 2026 | 2,757 | $834,533,256 |
| April 2026 | 2,845 | $1,133,951,481 |
| March 2026 | 2,606 | $2,029,625,450 |
| February 2026 | 1,996 | $1,063,823,753 |
| January 2026 | 1,929 | $524,644,416 |
| December 2025 | 2,074 | $684,187,196 |
| November 2025 | 2,357 | $445,696,104 |
| October 2025 (from Oct 17) | 1,589 | $553,084,605 |
October 2025 coverage begins October 17, 2025 (our first full pull); October 2026 is month-to-date.
Permits by trade — last 12 months
| Trade | Permits | Share | Reported value |
|---|---|---|---|
| Electrical | 7,675 | 24.2% | $1,017,462,702 |
| General & Other | 7,525 | 23.7% | $3,453,539,861 |
| Plumbing | 2,820 | 8.9% | $999,365,996 |
| Signage | 2,072 | 6.5% | $10,778,093 |
| Masonry | 1,925 | 6.1% | $193,718,159 |
| Solar | 1,909 | 6.0% | $53,666,943 |
| New Construction | 1,529 | 4.8% | $4,129,798,481 |
| Roofing | 1,382 | 4.4% | $253,470,072 |
| Fire Alarm | 1,133 | 3.6% | $0 |
| Elevator | 1,119 | 3.5% | $437,355,867 |
| HVAC | 1,001 | 3.2% | $331,924,143 |
| Fencing | 973 | 3.1% | $8,832,273 |
| Demolition | 683 | 2.2% | $68,340,565 |
Biggest projects issued in October 2026
| Project (permit #) | Trade | Reported value | Issued |
|---|---|---|---|
| 500 N Michigan Ave #101082340 DDS 2019 CBRC: INTERIOR BUILDOUT TO EXISTING 24-STORY MIXED-USE, OFFICE BUILDING TO CONVERT INTO MULTI-FAMI… | General & Other | $71,650,000 | 2026-10-16 |
| 225 W Randolph St #101086662 SELF CERT 2019 CBC: INTERIOR ALTERATIONS TO EXISTING OFFICE FLOORS 10 THROUGH 16 FOR BUILDOUT OF GOLUB CAPI… | General & Other | $44,919,084 | 2026-10-06 |
| 333 W Wolf Point Plz #101089193 SELF-CERT CBC: INITIAL BUILDOUT OF 56,721 SF COMMERICAL OFFICE SPACE ON 19TH, 20TH, AND 21ST FLOORS (3 CONT… | General & Other | $29,000,000 | 2026-10-08 |
| 8332 S Dr Martin L King Jr Dr #101081192 DDS 2019 CBC: NEW CONSTRUCTION OF A 52 UNIT SENIOR RESIDENTIAL BUILDING. THE PROJECT INCLUDES (44) 1 BEDROO… | New Construction | $25,000,000 | 2026-10-09 |
| 705 W Chicago Ave #101078267 DDS 2019 CBC: LANDSCAPING, PARK, AND RIVERWALK FOR ADJACENT CASINO, HOTEL, AND EVENT CENTER. (OCC GROUPS A-… | New Construction | $22,600,000 | 2026-10-16 |
| 315 S Jefferson St #101081111 DDS 2019 CBC: NEW CONSTRUCTION OF A 9-STORY MIXED USE BUILDING WITH BASEMENT ON CAISSONS. THE 1ST FLOOR WI… | New Construction | $19,000,000 | 2026-10-05 |
| 1700 W Adams St #101084556 DDS 2019 CBC: CONSTRUCTION OF A NEW TWO STORY PRECAST CONCRETE CHURCH WITH AUDITORIUM SEATING, CHILD CARE A… | General & Other | $15,000,000 | 2026-10-01 |
| 4641 N Ashland Ave #101083833 DDS 2019 CRBC: ERECT A FIVE (5) STORY RESIDENTIAL ADDITION TO AN EXISTING EXISTING FOUR (4) STORY MASONRY B… | General & Other | $14,000,000 | 2026-10-14 |
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