· rebuilt nightly from public records
BIG Construction LLC holds 30 project permits in Chicago from the last 12 months (8 in the last 90 days, latest Oct 14, 2026), $43.9M in estimated cost.
30 project permits in Chicago over the last 12 months, $43.9M in estimated cost, from the permits the City of Chicago Department of Buildings publishes: each project, its address and owner, and the trades that pulled permits at the same addresses.
New construction, renovation, structural and demolition permits naming BIG Construction LLC.
Latest issued Oct 14, 2026As the applicants reported it on these permits.
Electrical, plumbing, mechanical and other firms with permits at the same addresses.
Project permits naming BIG Construction LLC as general contractor, newest first. Showing 25 of 30.
| Issued | Address | Type | Est. cost | Work | Owner |
|---|---|---|---|---|---|
| Oct 14, 2026 | 15 E OAK ST | Renovation / alteration | $130,000 | SELF-CERT 2019 CBRC: REVISION TO BUILDING PERMIT #101066751 TO REVISE TWO PRIVATE OFFICES ... | Thor ASB 1-15 OAK ST, LLC |
| Oct 14, 2026 | 151 N FRANKLIN ST | Renovation / alteration | $1,045,725 | SELF CERT 2019 CBRC: REVISION TO PERMIT #101083912 FOR ELECTRICAL (POWER AND LIGHT FIXTURE... | 151 Franklin LLC |
| Oct 13, 2026 | 222 W MERCHANDISE MART PLZ | Renovation / alteration | $12,500,000 | SELF CERT 2019 CBRC: INTERIOR ALTERATIONS TO 4TH FLOOR OFFICE SPACE. WORK TO INCLUDE DEMO,... | AAR Corp |
| Sep 29, 2026 | 1 E WACKER DR | Renovation / alteration | $3,500,000 | SELF CERT 2019 CBRC: INTERIOR ALTERATIONS TO FLOORS 32, 34 & 35 AT EXISTING OFFICE BUILDIN... | O¿hagan Meyer LLC |
| Sep 3, 2026 | 360 N GREEN ST | Renovation / alteration | $11,000 | SELFCERT 2019 CBRC: REVISION TO PERMIT #101079788 TO INCLUDE INTERIOR ALTERATIONS TO EXIST... | Alliant Insurance Services |
| Aug 27, 2026 | 227 W MONROE ST | Renovation / alteration | $15,000 | SELFCERT 2019 CBRC: REVISION TO PERMIT #101083365 TO INCLUDE ALTERATIONS TO EXISTING 20TH ... | Alliant Insurance Services |
| Aug 25, 2026 | 1 E WACKER DR | Renovation / alteration | $140,000 | SELF CERT 2019 CBRC: SELECTIVE INTERIOR DEMOLITION TO 35TH FLOOR OFFICE SPACE. SCOPE TO IN... | O¿hagan Meyer LLC |
| Aug 17, 2026 | 151 N FRANKLIN ST | Renovation / alteration | $612,000 | SELF CERT 2019 CBRC: STRUCTRUAL PEER REVIEW INCLUDED. INTERIOR ALTERATIONS TO FIRST FLOOR... | 151 Franklin LLC |
| Jul 24, 2026 | 500 W MADISON ST | Renovation / alteration | $350,000 | SSELF CERT 2019 CBRC: INTERIOR ALTERATIONS TO EXISTING 30TH FLOOR RESTROOMS AS PER PLANS. ... | American International Group, Inc |
| Jul 22, 2026 | 227 W MONROE ST | Renovation / alteration | $410,000 | SELF-CERT 2019 CBRC: INTERIOR ALTERATIONS TO EXISTING 20TH FLOOR OFFICE SPACE - SUITE 2050... | Alliant Insurance Services |
| Jul 20, 2026 | 320 S CANAL ST | Renovation / alteration | $28,000 | SELF-CERT 2019 CBRC: REVISION TO PERMIT #101079806 TO RECONFIGURE LAN ROOM (#4020), AS PER... | Arch Insurance Group Inc |
| Jun 17, 2026 | 444 W LAKE ST | Renovation / alteration | $2,170,000 | SELFCERT 2019 CBRC: INTERIOR ALTERATIONS TO EXISTING 29TH FLOOR OFFICE SPACE. ACAR INCLUDE... | Transmarket Infrastructure Holdings LLC |
| Jun 15, 2026 | 320 S CANAL ST | Renovation / alteration | $1,800,000 | SELF CERT 2019 CBRC: INTERIOR ALTERATIONS TO 20TH FLOOR, SUITE 2030. WORK TO INCLUDE DEMO,... | Maximum Independent Brokerage, LLC |
| Jun 3, 2026 | 321 N CLARK ST | Renovation / alteration | $33,960 | SELF-CERT 2019 CBRC: ALTERATIONS OF EXISTING VACANT GROUND FLOOR RETAIL SUITE INCLUDING PA... | 321 North Clark Property LLC |
| Jun 3, 2026 | 131 S DEARBORN ST | Renovation / alteration | $700,000 | SELFCERT 2019 CBRC: INTERIOR DEMO ONLY TO EXISTING OFFICE SPACES ON FLOORS 34-37 IN AN EXI... | Bain & Company, Inc |
| May 5, 2026 | 320 S CANAL ST | Renovation / alteration | $142,519 | SELF-CERT 2019 CBC: REVISION TO PERMIT #101077826 FOR NEW MEETING ROOM/LOUNGE AREA, AND UP... | Kilpatrick Townsend & Stockton LLP |
| Apr 14, 2026 | 919 W FULTON MARKET | Renovation / alteration | $2,239,730 | SELF-CERT: FIRST TIME TENANT BUILDOUT TO SUITE 1003. WORK TO INCLUDE NON-STRUCTURAL PARTIT... | Blackedge Capital LLC |
| Apr 6, 2026 | 24 E WASHINGTON ST | Renovation / alteration | $111,000 | SELF-CERT 2019 CBRC: INTERIOR ALTERATIONS TO EXISTING 8TH FLOOR OFFICE SPACE. NO CHANGE TO... | WEI Sales, LLC |
| Mar 30, 2026 | 320 S CANAL ST | Renovation / alteration | $3,400,000 | SELF-CERT 2019 CBRC: 1ST TIME BUILDOUT OF OFFICE SPACE ON THE 40TH FLOOR OF AN EXISTING OF... | Arch Capital Services Inc |
| Mar 18, 2026 | 161 N CLARK ST | Renovation / alteration | $90,000 | SELF CERT 2019 CBRC: INTERIOR ALTERATIONS TO EXISTING 8TH FLOOR OFFICE SPACE. WORK TO INCL... | The Travelers Indemnity Compa Y, A Connecticut Corporation |
| Mar 18, 2026 | 360 N GREEN ST | Renovation / alteration | $3,700,000 | SELFCERT 2019 CBRC: INTERIOR ALTERATIONS TO EXISTING 8TH FLOOR OFFICE SPACE. NO CHANGE TO ... | Alliant Insurance Services |
| Mar 11, 2026 | 200 E RANDOLPH ST | Renovation / alteration | $40,000 | SELF CERT 2019 CBRC: FULL ENCLOSURE OF EXISTING NON-REQUIRED COMMUNICATING STAIR BETWEEN F... | Slalom Inc |
| Mar 4, 2026 | 131 S DEARBORN ST | Renovation / alteration | $350,000 | SELF CERT 2019 CBRC: UPGRADES TO EXISTING 37TH FLOOR 1,860 SF OUTDOOR TERRACE (NORTH) INCL... | Bain & Company, Inc |
| Feb 23, 2026 | 161 N CLARK ST | Renovation / alteration | $450,000 | SELF CERT 2019 CBRC: INTERIOR ALTERATIONS TO EXISTING 8TH & 9TH FLOOR OFFICE SPACE. WORK T... | The Travelers Indemnity Compa Y, A Connecticut Corporation |
| Feb 19, 2026 | 320 S CANAL ST | Renovation / alteration | $6,500,000 | SELF-CERT 2019 CBC: 1ST TIME BUILDOUT OF THE 45TH FLOOR OF AN EXISTING OFFICE BUILDING, FO... | Kilpatrick Townsend & Stockton LLP |
Firms that pulled a permit at an address where BIG Construction LLC holds a project permit in the last 12 months.
| Firm | Trade | Permits |
|---|---|---|
| Titan Electric LLC | Electrical | 45 |
| Great Lakes Plumbing & Heating | Plumbing | 29 |
| Maron Electric Company | Electrical | 25 |
| Kelso-burnett Co | Electrical | 25 |
| Continental Electrical Constru | Electrical | 24 |
| Admiral Heating & Ventilating | Mechanical / HVAC | 23 |
| Current Communications Corp | Electrical | 21 |
| REX Elect. & Technologies LLC | Electrical | 20 |
| Lombardi Electric, Inc | Electrical | 19 |
| Ceco, Inc | Electrical | 18 |
| Environment Mechanical Service | Mechanical / HVAC | 13 |
| A+plus Plumbing, Inc | Plumbing | 11 |
| Gibson Electric Co., Inc | Electrical | 10 |
| Johns Plumbing, Inc | Plumbing | 10 |
| Terrance Electric & Technology | Electrical | 10 |
| Competitive Piping Systems | Mechanical / HVAC | 10 |
| Electric ONE Company | Electrical | 8 |
| Enviromental Mechanical Serv | Mechanical / HVAC | 7 |
| DW Mechanical Group,inc | Plumbing | 7 |
| Blade Electric & | Electrical | 7 |
Owners named on its permits (businesses only), by number of permits.
15 E OAK ST (renovation / alteration, $130K), issued Oct 14, 2026; 151 N FRANKLIN ST (renovation / alteration, $1M), issued Oct 14, 2026; 222 W MERCHANDISE MART PLZ (renovation / alteration, $12.5M), issued Oct 13, 2026.
30 project permits in the last 12 months and 8 in the last 90 days, as published by the City of Chicago Department of Buildings.
Titan Electric LLC (Electrical); Great Lakes Plumbing & Heating (Plumbing); Maron Electric Company (Electrical); Kelso-burnett Co (Electrical); Continental Electrical Constru (Electrical).
Alliant Insurance Services (4 permits); 151 Franklin LLC (2 permits); O¿hagan Meyer LLC (2 permits); Bain & Company, Inc (2 permits); Kilpatrick Townsend & Stockton LLP (2 permits).
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Compiled from public records and refreshed nightly; last updated Nov 5, 2026. Permits are as the city published them; estimated costs are as the applicant reported them and are not contract values. General contractors, trades and owners are named as businesses; no individuals are. Check the source before acting. See something wrong? Tell us and we will correct it.