| Bakes Steel Erectors Inc. | Commercial Filing | Active | |
| Lorig Construction Company | Commercial Filing | Active | |
| Abbey Construction Co. Inc. | Commercial Filing | Active | |
| Autumn Construction Services Inc | Commercial Filing | Active | |
| Mackie Consultants, Llc | Commercial Filing | Active | |
| Rock Road Companies Inc. | Commercial Filing | Active | |
| Jp Excavating & Trucking Inc. | Commercial Filing | Active | |
| Hein Construction Co Inc | Commercial Filing | Active | |
| Rock River Electric. Inc. | Commercial Filing | Active | |
| Schroeder & Schroeder. Inc. | Commercial Filing | Active | |
| Iv Network Inc. | Commercial Filing | Active | |
| Lindahl Brothers Inc. | Commercial Filing | Active | |
| Feutz Contractors Inc | Commercial Filing | Active | |
| Arch O&M Inc. | Commercial Filing | Active | |
| R.B. Crowther Co. | Commercial Filing | Active | |
| Cross Construction Inc | Commercial Filing | Active | |
| Anderson Electric Inc. | Commercial Filing | Active | |
| Sk Service Corp | Commercial Filing | Active | |
| Commercial Electric Inc. | Commercial Filing | Active | |
| Commercial Electric Inc. | Commercial Filing | Active | |
| Stark Excavating Inc. | Commercial Filing | Active | |
| Cummins Inc. | Commercial Filing | Active | |
| Accomplished Mechanical Industries Ltd | Commercial Filing | Active | |
| Construction Cleaning Company | Commercial Filing | Active | |
| Alliance Contractors Inc. | Commercial Filing | Active | |
| Prospect Electric Co | Commercial Filing | Active | |
| Clausen Structures. Inc. | Commercial Filing | Active | |
| Alliance Contractors Inc. | Commercial Filing | Active | |
| Cummins Inc. | Commercial Filing | Active | |
| Tee Jay Service Company | Commercial Filing | Active | |
| Tee Jay Service Company | Commercial Filing | Active | |
| Chicagoland Paving Contractors Inc. | Commercial Filing | Active | |
| Schroeder & Schroeder. Inc. | Commercial Filing | Active | |
| Carey Electric Contracting Llc | Commercial Filing | Active | |
| Tee Jay Service Company | Commercial Filing | Active | |
| Chicago Heights Construction Company | Commercial Filing | Active | |
| R.B. Crowther Co. | Commercial Filing | Active | |
| International Decorators Inc. | Commercial Filing | Active | |
| Eagle Concrete Inc. | Commercial Filing | Active | |
| Eagle Concrete Inc. | Commercial Filing | Active | |
| Schroeder & Schroeder. Inc. | Commercial Filing | Active | |
| Gallagher Asphalt Corporation | Commercial Filing | Active | |
| Tee Jay Service Company | Commercial Filing | Active | |
| Hill Mechanical Corp. | Commercial Filing | Active | |
| Troch Mcneil Paving Co. | Commercial Filing | Active | |
| Oosterbaan & Sons Co. | Commercial Filing | Active | |
| Jac Masonry Inc. | Commercial Filing | Active | |
| 25C-456 Niles TS HS District #219 | Commercial Filing | Active | |
| K&J Painting Llc | Commercial Filing | Active | |
| R.B. Crowther Co. | Commercial Filing | Active | |
| Work Zone Safety Inc | Commercial Filing | Active | |
| Alliance Contractors Inc. | Commercial Filing | Active | |
| Acura Inc | Commercial Filing | Active | |
| Malcor Roofing Of Illinois. Inc. | Commercial Filing | Active | |
| Mechanical & Industrial Steel Services. Inc. | Commercial Filing | Active | |
| Just Rite Acoustics Inc. | Commercial Filing | Active | |
| Accomplished Mechanical Industries Ltd | Commercial Filing | Active | |
| Perfect Turf Distributing Llc | Commercial Filing | Active | |
| Abbey Construction Co. Inc. | Commercial Filing | Active | |
| Cryer & Olsen Mechanical Inc | Commercial Filing | Active | |
| Continental Electrical Construction Company | Commercial Filing | Active | |
| Flood Testing Laboratories Inc. | Commercial Filing | Active | |
| Landworks Ltd. | Commercial Filing | Active | |
| Acura Inc | Commercial Filing | Active | |
| Boller Construction Co Inc | Commercial Filing | Active | |
| Ma Rebar Services Inc | Commercial Filing | Active | |
| Swallow Construction Corp | Commercial Filing | Active | |
| Mackie Consultants, Llc | Commercial Filing | Active | |
| K-Five Construction Corp | Commercial Filing | Active | |
| Eagle Concrete Inc. | Commercial Filing | Active | |
| International Decorators Inc. | Commercial Filing | Active | |
| M&J Underground Inc. | Commercial Filing | Active | |
| Carey Electric Contracting Llc | Commercial Filing | Active | |
| Illinois Architectural Glass & Aluminum Llc | Commercial Filing | Active | |
| Galaxy Underground Inc | Commercial Filing | Active | |
| Flotech Mechanical Systems Inc. | Commercial Filing | Active | |
| Schroeder & Schroeder. Inc. | Commercial Filing | Active | |
| Abbey Construction Co. Inc. | Commercial Filing | Active | |
| Galaxy Underground Inc | Commercial Filing | Active | |
| Powerlink Electric Llc | Commercial Filing | Active | |
| Hoppy'S Landscaping Inc | Commercial Filing | Active | |
| Visu-Sewer Of Illinois Llc | Commercial Filing | Active | |
| Eagle Concrete Inc. | Commercial Filing | Active | |
| Galaxy Underground Inc | Commercial Filing | Active | |
| International Decorators Inc. | Commercial Filing | Active | |
| Otto Baum Company Inc. | Commercial Filing | Active | |
| International Decorators Inc. | Commercial Filing | Active | |
| Galaxy Underground Inc | Commercial Filing | Active | |
| International Decorators Inc. | Commercial Filing | Active | |
| Chicagoland Paving Contractors Inc. | Commercial Filing | Active | |
| May Decorating Ii Inc | Commercial Filing | Active | |
| F.H. Paschen S.N. Nielsen & Associates Llc | Commercial Filing | Active | |
| Tee Jay Service Company | Commercial Filing | Active | |
| Superior Road Striping Inc. | Commercial Filing | Active | |
| Cummins Inc. | Commercial Filing | Active | |
| Prospect Electric Co | Commercial Filing | Active | |
| Dumex Construction Co. | Commercial Filing | Active | |
| J. Hamilton Electric Co. Inc. | Commercial Filing | Active | |
| Abbey Construction Co. Inc. | Commercial Filing | Active | |
| A Lamp Concrete Contractors Inc. | Commercial Filing | Active | |
| Cummins Inc. | Commercial Filing | Active | |
| Cummins Inc. | Commercial Filing | Active | |
| Cummins Inc. | Commercial Filing | Active | |
| Cummins Inc. | Commercial Filing | Active | |
| Cummins Inc. | Commercial Filing | Active | |
| Cummins Inc. | Commercial Filing | Active | |
| Builders Paving Llc | Commercial Filing | Active | |
| Builders Paving Llc | Commercial Filing | Active | |
| Solar Landscape Llc | Commercial Filing | Active | |
| Weatherproofing Technologies Inc. | Commercial Filing | Active | |
| Weatherguard Roofing Co. | Commercial Filing | Active | |
| Cj Erickson Plumbing Co | Commercial Filing | Active | |
| Schroeder & Schroeder. Inc. | Commercial Filing | Active | |
| Lyons Electric Company Inc. | Commercial Filing | Active | |
| Cci Floors, Inc | Commercial Filing | Active | |
| Reil Construction Inc. | Commercial Filing | Active | |
| Geocon Professional Services Llc | Commercial Filing | Active | |
| United Meters Inc | Commercial Filing | Active | |
| Ac Pavement Striping Co. | Commercial Filing | Active | |
| Metal Works Of Chicago Inc | Commercial Filing | Active | |
| Jc Insulation Inc | Commercial Filing | Active | |
| Hacienda Landscaping Inc | Commercial Filing | Active | |
| D K Contractors Inc. | Commercial Filing | Active | |
| Mechanical Test & Balance, Inc. | Commercial Filing | Active | |
| Flood Testing Laboratories Inc. | Commercial Filing | Active | |
| Herlihy Mid-Continent Company | Commercial Filing | Active | |
| Roadsafe Traffic Systems Inc. | Commercial Filing | Active | |
| Metromex Contractors Inc | Commercial Filing | Active | |
| Abbey Construction Co. Inc. | Commercial Filing | Active | |
| Curran Contracting Company | Commercial Filing | Active | |
| Cj Erickson Plumbing Co | Commercial Filing | Active | |
| Low Voltage Solutions Inc. | Commercial Filing | Active | |
| Lyons Electric Company Inc. | Commercial Filing | Active | |
| Metal Works Of Chicago Inc | Commercial Filing | Active | |
| Connelly Electric Co. | Commercial Filing | Active | |
| Nelson Fire Protection Company | Commercial Filing | Active | |
| Semper Fi Landscaping Inc | Commercial Filing | Active | |
| Work Zone Safety Inc | Commercial Filing | Active | |
| Columbia Sheet Metal Works, Inc | Commercial Filing | Active | |
| W.W. Timber, Inc. | Commercial Filing | Active | |
| Elliot Construction Corp | Commercial Filing | Active | |
| Modernfold Chicago, Inc. | Commercial Filing | Active | |
| K-Five Construction Corp | Commercial Filing | Active | |
| G.E. Riddiford Roofing Co | Commercial Filing | Active | |
| Mk Industries Inc. | Commercial Filing | Active | |
| S&J Construction Co. Inc. | Commercial Filing | Active | |
| Sunpeak Llc | Commercial Filing | Active | |
| Dahme Mechanical Industries. Inc | Commercial Filing | Active | |
| Devinci Construction Inc. | Commercial Filing | Active | |
| Noonan Insulation Inc. | Commercial Filing | Active | |