· rebuilt nightly from public records
Winslow Development Group LLC holds 4 project permits in Chicago from the last 12 months (2 in the last 90 days, latest Sep 21, 2026), $4.7M in estimated cost.
4 project permits in Chicago over the last 12 months, $4.7M 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 Winslow Development Group LLC.
Latest issued Sep 21, 2026As the applicants reported it on these permits.
3 new-construction permitsElectrical, plumbing, mechanical and other firms with permits at the same addresses.
Project permits naming Winslow Development Group LLC as general contractor, newest first.
| Issued | Address | Type | Est. cost | Work | Owner |
|---|---|---|---|---|---|
| Sep 21, 2026 | 2123 W CORTLAND ST | Renovation / alteration | $100 | SELF CERT 2019 CBC: REVISION TO PERMIT # 101083041 TO REMOVE NON -REQUIRED NFPA SPRINKLER ... | 2121 W Cortland LLC |
| Sep 10, 2026 | 907 W WEBSTER AVE | New construction | $3,000,000 | SC 2019 CBC: NEW CONSTRUCTION: ERECT A 3-STORY (CONSTRUCTION TYPE III-A) MASONRY, 4 DWELLI... | 907-09 W. Webster, LLC |
| Jun 11, 2026 | 2123 W CORTLAND ST | New construction | $719,250 | SELF CERT 2019 CBC: ERECT 2 STORY VA FRAME SINGLE FAMILY RESIDENCE WITH BASEMENT , NFPA... | 2121 W Cortland LLC |
| Nov 13, 2025 | 1934 N HALSTED ST | New construction | $1,000,000 | SELF CERT CBC 2019: ERECT NEW 3 STORY, 2 UNIT, 3A MASONRY APARTMENT BUILDING W/ DETACHED 2... | 1934 N Halsted LLC |
Firms that pulled a permit at an address where Winslow Development Group LLC holds a project permit in the last 12 months.
| Firm | Trade | Permits |
|---|---|---|
| B&K Concrete 01 | Other trade | 4 |
| Ferik Electrical Service,inc | Electrical | 4 |
| Murray Mechanical | Mechanical / HVAC | 4 |
| Baczynski Masonry Inc | Other trade | 4 |
| Wermar Plumbing Corp | Plumbing | 3 |
| LS Plumbing,inc | Plumbing | 2 |
| CRS Concrete LTD | Other trade | 1 |
Owners named on its permits (businesses only), by number of permits.
2123 W CORTLAND ST (renovation / alteration, $100), issued Sep 21, 2026; 907 W WEBSTER AVE (new construction, $3M), issued Sep 10, 2026; 2123 W CORTLAND ST (new construction, $719K), issued Jun 11, 2026.
4 project permits in the last 12 months and 2 in the last 90 days, as published by the City of Chicago Department of Buildings.
B&K Concrete 01 (Other trade); Ferik Electrical Service,inc (Electrical); Murray Mechanical (Mechanical / HVAC); Baczynski Masonry Inc (Other trade); Wermar Plumbing Corp (Plumbing).
2121 W Cortland LLC (2 permits); 907-09 W. Webster, LLC (1 permits); 1934 N Halsted LLC (1 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.