| Entity Name | Type | License # | City | Status | Action |
|---|---|---|---|---|---|
| LISEC ARCHITECTS LLC | Business | 184006111-0001 | CHICAGO | NOT RENEWED | Verify |
| LISKA ARCHITECTS | Business | 184005265-0001 | CHICAGO | ACTIVE | Verify |
| LIU ARCHITECTS PC | Business | 184003712-0001 | CHICAGO | NOT RENEWED | Verify |
| LJP ARCHITECTS PC | Business | 184008856-0001 | OAK LAWN | ACTIVE | Verify |
| LLAMAS AND ASSOCIATES INC | Business | 184001785-0002 | BUFFALO GROVE | NOT RENEWED | Verify |
| LM CONSULTANTS INC | Business | 184001623-0004 | VERNON HILLS | NOT RENEWED | Verify |
| LM CONSULTANTS INC | Business | 184003431-0004 | GRAYSLAKE | ACTIVE | Verify |
| LMJ CONSULTANTS INC | Business | 184003983-0001 | EVANSTON | NOT RENEWED | Verify |
| LOCHNER MMM GROUP LLC | Business | 184005331-0006 | CHICAGO | NOT RENEWED | Verify |
| LOEBL SCHLOSSMAN & HACKL INC | Business | 184000353-0001 | CHICAGO | NOT RENEWED | Verify |
| LOEPPERT & ASSOCIATES INC | Business | 184001490-0002 | CRYSTAL LAKE | NOT RENEWED | Verify |
| LOEWENBERG ARCHITECTS LLC | Business | 184005552-0001 | CHICAGO | NOT RENEWED | Verify |
| LOEWENBERG/FITCH ARCHITECTS INC | Business | 184000616-0001 | CHICAGO | NOT RENEWED | Verify |
| LOGAN COUNTY LAND | Business | 184001396-0002 | LINCOLN | NOT RENEWED | Verify |
| LOHAN ANDERSON LLC | Business | 184004115-0001 | CHICAGO | NOT RENEWED | Verify |
| LOHAN ARCHITECTURE PLLC | Business | 184008959-0001 | CHICAGO | ACTIVE | Verify |
| LONCO INC | Business | 184002203-0006 | NAPERVILLE | NOT RENEWED | Verify |
| LONGO PARK LLC | Business | 184006581-0001 | CHICAGO | NOT RENEWED | Verify |
| LONTAI DESIGN LLC | Business | 184004347-0001 | PEORIA | NOT RENEWED | Verify |
| LOPEZ + BROSNAN ARCHITECTS, PLLC | Business | 184009066-0001 | GLEN ELLYN | ACTIVE | Verify |
| LOPEZ PEREZ AND ASSOCIATES | Business | 184006476-0008 | CHICAGO | NOT RENEWED | Verify |
| LOREN C KOLDITZ ENGINEERING COMPANY | Business | 184000809-0002 | NEW ATHENS | NOT RENEWED | Verify |
| LORENZ VIRTUAL STUDIO INC | Business | 184002491-0001 | EVANSTON | NOT RENEWED | Verify |
| LORIN ARCHITECTURE GROUP LLC | Business | 184007258-0001 | AURORA | ACTIVE | Verify |
| LOSCH ENGINEERING CORP | Business | 184002409-0003 | PALATINE | CLOSED | Verify |
| LOTHAN VAN HOOK DESTEFANO ARCHITECTURE LLC | Business | 184006281-0001 | CHICAGO | ACTIVE | Verify |
| LOUIS JONES ENTERPRISES INC | Business | 184003153-0002 | CHICAGO | NOT RENEWED | Verify |
| LOUIS SCHERSCHEL ARCHITECTURE | Business | 184005548-0001 | CHICAGO | CANCELLED | Verify |
| LOUIS SCHERSCHEL ARCHITECTURE PC | Business | 184005747-0001 | SLEEPY HOLLOW | NOT RENEWED | Verify |
| LOUIS SHELL STRUCTURES INC | Business | 184004600-0003 | LA GRANGE | ACTIVE | Verify |
| LOW IMPACT DESIGN LLC | Business | 184005398-0001 | CHICAGO | NOT RENEWED | Verify |
| LOWE STUDIOS ARCHITECTURE AND DESIGN LLC | Business | 184007132-0001 | BOLINGBROOK | NOT RENEWED | Verify |
| LPF ENGINEERING | Business | 184006532-0002 | LINDENHURST | NOT RENEWED | Verify |
| LRD & ASSOCIATES INC | Business | 184001719-0002 | NORTHBROOK | NOT RENEWED | Verify |
| LRS DESIGN GROUP LLC | Business | 184006079-0001 | GLENVIEW | NOT RENEWED | Verify |
| LSK CONSULTANTS INC | Business | 184003776-0001 | OAK LAWN | NOT RENEWED | Verify |
| LTDA, LLC | Business | 184007579-0001 | CHICAGO | NOT RENEWED | Verify |
| LTR LAND SURVEYING INC | Business | 184003109-0008 | COLLINSVILLE | NOT RENEWED | Verify |
| LU HL PLLC | Business | 184008995-0003 | CHICAGO | NOT RENEWED | Verify |
| LUCCHESE & ASSOCIATES LTD | Business | 184002227-0001 | ELMHURST | NOT RENEWED | Verify |
| LUCID ENGINEERING SERVICES GROUP LLC | Business | 184006684-0006 | BLOOMINGDALE | ACTIVE | Verify |
| LUCIEN LAGRANGE ARCHITECTS LTD | Business | 184000623-0001 | CHICAGO | NOT RENEWED | Verify |
| LUCIEN LAGRANGE STUDIO LLC | Business | 184008157-0001 | CHICAGO | NOT RENEWED | Verify |
| LUCO CONSTRUCTION COMPANY | Business | 184004829-0010 | CRYSTAL LAKE | NOT RENEWED | Verify |
| LUKASIK & ASSOCIATES LTD | Business | 184006340-0001 | FLOSSMOOR | ACTIVE | Verify |
| LUMEN TECHNICAL SERVICES CORP | Business | 184004122-0002 | WHEATON | ACTIVE | Verify |
| LUNSFORD ARCHITECTS AND ENGINEERS INC | Business | 184001933-0004 | MARION | NOT RENEWED | Verify |
| LUSH DESIGN LAB, PLLC | Business | 184008398-0001 | WILMETTE | ACTIVE | Verify |
| LUSSOW'S DESIGN STRATEGIES PC | Business | 184003621-0001 | MOUNT PROSPECT | NOT RENEWED | Verify |
| LW&Z JOINT VENTURE | Business | 184003122-0001 | CHICAGO | NOT RENEWED | Verify |