| Entity Name | Type | License # | City | Status | Action |
|---|---|---|---|---|---|
| OLLER ROOFING & CONSTRUCTION | Business | 104007711 | LITCHFIELD | CANCELLED | Verify |
| OLLIE WRIGHT | Business | 105005077 | DECATUR | ACTIVE | Verify |
| OLLIES CONSTRUCTION INC | Business | 104004717 | MASCOUTAH | NOT RENEWED | Verify |
| OLLIGES CONSTRUCTION | Business | 104006369 | HIGHLAND | NOT RENEWED | Verify |
| OLMEC CONSTRUCTION | Business | 104010041 | CRYSTAL LAKE | NOT RENEWED | Verify |
| OLSON AND OLSON | Business | 104003686 | DEKALB | CANCELLED | Verify |
| OLSON BUILDERS INC | Business | 104003556 | CORY | NOT RENEWED | Verify |
| OLSON CONSTRUCTION | Business | 104005948 | RIDOTT | NOT RENEWED | Verify |
| OLSON CONSTRUCTION SERVICES INC | Business | 104010004 | JOY | NOT RENEWED | Verify |
| OLSON CONTRUCTION INC | Business | 104004809 | ST CHARLES | CANCELLED | Verify |
| OLSON HOME IMPROVEMENTS INC | Business | 104002613 | HEBRON | ACTIVE | Verify |
| OLSSON ROOFING CO INC | Business | 104000173 | AURORA | ACTIVE | Verify |
| OLSZANOWSKI CONSTRUCTION | Business | 104005255 | ROMEOVILLE | CANCELLED | Verify |
| OLYMPIA REMODELING AND RENOVATION INC | Business | 104013681 | MINIER | CANCELLED | Verify |
| OLYMPIC BUILDERS | Business | 104003692 | BERWYN | CANCELLED | Verify |
| OLYMPIC ROOFING AND CONSTRUCTION INC | Business | 104006512 | NILES | CANCELLED | Verify |
| OMC CONSTRUCTION & RESTORATION INC | Business | 104016115 | MORTON GROVE | NOT RENEWED | Verify |
| OMEGA CONSTRUCTION DEVELOPMEN INC | Business | 104014700 | CHICAGO | CANCELLED | Verify |
| OMEGA CONTRACTING LLC | Business | 104016232 | BERWYN | ACTIVE | Verify |
| OMEGA EXTERIORS MIDWEST INC | Business | 104018739 | TINLEY PARK | ACTIVE | Verify |
| OMEGA EXTERIORS REMODELING INC | Business | 104019959 | CHICAGO | ACTIVE | Verify |
| OMEGA RENOVATION INC | Business | 104017620 | SCHAUMBURG | ACTIVE | Verify |
| OMEGA ROOFING CONTRACTORS LLC | Business | 104018564 | COUNTRY CLUB HILLS | NOT RENEWED | Verify |
| OMEGA ROOFING INC | Business | 104003746 | SCHAUMBURG | CANCELLED | Verify |
| OMNI ERECTION INC | Business | 104014790 | DECATUR | NOT RENEWED | Verify |
| OMNI ERECTORS INC | Business | 104016615 | DECATUR | NOT RENEWED | Verify |
| OMNI II INC | Business | 104009105 | AURORA | NOT RENEWED | Verify |
| OMNISPECT INC | Business | 104015101 | STREAMWOOD | ACTIVE | Verify |
| OMNIWORLD INC | Business | 104006943 | ROCKFORD | NOT RENEWED | Verify |
| OMZ CONSTRUCTION, INC. | Business | 104019360 | OAK LAWN | ACTIVE | Verify |
| ON CALL PROPERTIES INC | Business | 104016879 | ELK GROVE VILLAGE | CANCELLED | Verify |
| ON GUARD ROOFING PLLC | Business | 104018943 | CHICAGO | ACTIVE | Verify |
| ON IT ROOFING & TUCKPOINTING LLC | Business | 104020413 | OAK LAWN | ACTIVE | Verify |
| ON POINT BUILDERS SERVICES PLLC | Business | 104019074 | NORTHBROOK | ACTIVE | Verify |
| ON THE EDGE | Business | 104010744 | VILLA GROVE | CANCELLED | Verify |
| ON THE MARC, LLC | Business | 104018129 | STERLING | NOT RENEWED | Verify |
| ON THE TOP ROOFING | Business | 104016087 | PLAINFIELD | NOT RENEWED | Verify |
| ON THE TOP ROOFING LLC | Business | 104016504 | PLAINFIELD | ACTIVE | Verify |
| ON TIME CONTRACTING PLLC | Business | 104019409 | EAST SAINT LOUIS | ACTIVE | Verify |
| ON TOP ROOFING | Business | 104009196 | WAUKEGAN | CANCELLED | Verify |
| ON TOP ROOFING | Business | 104010790 | CRETE | NOT RENEWED | Verify |
| ON TOP ROOFING & CONSTRUCTION | Business | 104011430 | BURBANK | NOT RENEWED | Verify |
| ON-POINT EXTERIOR LLC | Business | 104019999 | JOLIET | NOT RENEWED | Verify |
| ON-THE-MARK CONSTRUCTION | Business | 104012457 | PUTNAM | NOT RENEWED | Verify |
| ONAN BROTHERS CONSTRUCTION | Business | 104001239 | GURNEE | CANCELLED | Verify |
| ONAN ROOFING INC | Business | 104004813 | WAUKEGAN | ACTIVE | Verify |
| ONE CONSTRUCTION INC | Business | 104004399 | KANKAKEE | NOT RENEWED | Verify |
| ONE SOURCE ROOFING & MAINTENANCE LLC | Business | 104014849 | RICHMOND | NOT RENEWED | Verify |
| ONEILL CONTRACTORS INC | Business | 104016612 | GLENVIEW | NOT RENEWED | Verify |
| ONES ROOFING | Business | 104014997 | WAUKEGAN | NOT RENEWED | Verify |