| Flotech Mechanical Systems Inc. | Commercial Filing | Active | |
| Elens & Maichin Roofing & Sheet Metal Inc. | Commercial Filing | Active | |
| Clinton Electric Inc. | Commercial Filing | Active | |
| Arch O&M Inc. | Commercial Filing | Active | |
| Construction Field Services Llc | Commercial Filing | Active | |
| Midwest Heritage Construction Llc | Commercial Filing | Active | |
| Clinton Electric Inc. | Commercial Filing | Active | |
| Cannonball Mechanical Paul L. Buddy Plumbing And Heating Inc. | Commercial Filing | Active | |
| Clinton Electric Inc. | Commercial Filing | Active | |
| Limbaugh Construction Co. Inc. | Commercial Filing | Active | |
| Cyberdyne Masonry Corporation | Commercial Filing | Active | |
| Mhc Operations Llc | Commercial Filing | Active | |
| Clinton Electric Inc. | Commercial Filing | Active | |
| Leander Construction Inc. | Commercial Filing | Active | |
| Limbaugh Construction Co. Inc. | Commercial Filing | Active | |
| Elens & Maichin Roofing & Sheet Metal Inc. | Commercial Filing | Active | |
| Hargrave Builders Inc | Commercial Filing | Active | |
| Sheridan Plumbing And Sewer Inc. | Commercial Filing | Active | |
| Arch O&M Inc. | Commercial Filing | Active | |
| Limbaugh Construction Co. Inc. | Commercial Filing | Active | |
| Dfc Fence Inc | Commercial Filing | Active | |
| Arch O&M Inc. | Commercial Filing | Active | |
| Flotech Mechanical Systems Inc. | Commercial Filing | Active | |
| Convergint Technologies Llc | Commercial Filing | Active | |
| Cyberdyne Masonry Corporation | Commercial Filing | Active | |
| Flotech Mechanical Systems Inc. | Commercial Filing | Active | |
| Porter Electric Llc | Commercial Filing | Active | |
| Union Roofing Co. Inc. | Commercial Filing | Active | |
| Ceroni Piping Company | Commercial Filing | Active | |
| Jp Excavating & Trucking Inc. | Commercial Filing | Active | |
| Hoerr Construction Inc. | Commercial Filing | Active | |
| Hoerr Construction Inc. | Commercial Filing | Active | |
| Schroeder & Schroeder. Inc. | Commercial Filing | Active | |
| Mackie Consultants, Llc | Commercial Filing | Active | |
| Arch O&M Inc. | Commercial Filing | Active | |
| Hoerr Construction Inc. | Commercial Filing | Active | |
| Independent Mechanical Industries Inc. | Commercial Filing | Active | |
| Work Zone Safety Inc | Commercial Filing | Active | |
| Schroeder & Schroeder. Inc. | Commercial Filing | Active | |
| Elens & Maichin Roofing & Sheet Metal Inc. | Commercial Filing | Active | |
| Commercial Electric Inc. | Commercial Filing | Active | |
| Independent Mechanical Industries Inc. | Commercial Filing | Active | |
| Garden Electric Inc. | Commercial Filing | Active | |
| Hoerr Construction Inc. | Commercial Filing | Active | |
| Midwest Glass Tinters, Inc. | Commercial Filing | Active | |
| Hargrave Builders Inc. | Commercial Filing | Active | |
| Sk Service Corp | Commercial Filing | Active | |
| Hoerr Construction Inc. | Commercial Filing | Active | |
| Petry Kuhne Company | Commercial Filing | Active | |
| Pfeffer Electrical Contracting Inc. | Commercial Filing | Active | |
| Commercial Electric Inc. | Commercial Filing | Active | |
| Monarch Construction Co | Commercial Filing | Active | |
| Acura Inc | Commercial Filing | Active | |
| K&J Painting Llc | Commercial Filing | Active | |
| Gallagher Asphalt Corporation | Commercial Filing | Active | |
| Hargrave Builders Inc | Commercial Filing | Active | |
| V3 Construction Group Llc | Commercial Filing | Active | |
| Jp Excavating & Trucking Inc. | Commercial Filing | Active | |
| Oosterbaan & Sons Co. | Commercial Filing | Active | |
| Grp Mechanical Company Inc. | Commercial Filing | Active | |
| Clinton Electric Inc. | Commercial Filing | Active | |
| R.B. Crowther Co. | Commercial Filing | Active | |
| Cummins Inc. | Commercial Filing | Active | |
| Commercial Electric Inc. | Commercial Filing | Active | |
| Duce Construction Company | Commercial Filing | Active | |
| Hoerr Construction Inc. | Commercial Filing | Active | |
| Stark Excavating Inc. | Commercial Filing | Active | |
| Geocon Professional Services Llc | Commercial Filing | Active | |
| Hargrave Builders Inc. | Commercial Filing | Active | |
| Jolma Utilities Llc | Commercial Filing | Active | |
| R.W. Dunteman Co. | Commercial Filing | Active | |
| Northern Illinois Service Company | Commercial Filing | Active | |
| Just Rite Acoustics Inc. | Commercial Filing | Active | |
| Nelson Fire Protection Company | Commercial Filing | Active | |
| Elliott And Wood Inc. | Commercial Filing | Active | |
| Elliott And Wood Inc. | Commercial Filing | Active | |
| Monarch Construction Co | Commercial Filing | Active | |
| Oosterbaan & Sons Co. | Commercial Filing | Active | |
| A Lamp Concrete Contractors Inc. | Commercial Filing | Active | |
| New Era Contracting, Inc | Commercial Filing | Active | |
| Quality Mechanical Inc. | Commercial Filing | Active | |
| Primo Contractors Inc | Commercial Filing | Active | |
| Oosterbaan & Sons Co. | Commercial Filing | Active | |
| Ko-On Services Corp | Commercial Filing | Active | |
| Cord Construction Co. | Commercial Filing | Active | |
| Northern Il Terrazzo & Tile Co | Commercial Filing | Active | |
| Roadsafe Traffic Systems Inc. | Commercial Filing | Active | |
| Nelson Fire Protection Company | Commercial Filing | Active | |
| Roadsafe Traffic Systems Inc. | Commercial Filing | Active | |
| Lyons Electric Company Inc. | Commercial Filing | Active | |
| Schroeder & Schroeder. Inc. | Commercial Filing | Active | |
| Solar Landscape Llc | Commercial Filing | Active | |
| Lj Morse Construction Co. | Commercial Filing | Active | |
| Cummins Inc. | Commercial Filing | Active | |
| Cummins Inc. | Commercial Filing | Active | |
| Cummins Inc. | Commercial Filing | Active | |
| Cummins Inc. | Commercial Filing | Active | |
| A Lamp Concrete Contractors Inc. | Commercial Filing | Active | |
| Cummins Inc. | Commercial Filing | Active | |
| Galaxy Underground Inc | Commercial Filing | Active | |
| 93Energy Llc | Commercial Filing | Active | |
| Stuckey Construction Company Inc. | Commercial Filing | Active | |
| Schroeder & Schroeder. Inc. | Commercial Filing | Active | |
| Carpenter-Park Ridge Niles School District 64 2026 Referendum Work Remodel | Commercial Filing | Active | |
| Ac Pavement Striping Co. | Commercial Filing | Active | |
| 123 Labor Inc. | Commercial Filing | Active | |
| Flood Testing Laboratories Inc. | Commercial Filing | Active | |
| Devinci Construction Inc. | Commercial Filing | Active | |
| Connelly Electric Co. | Commercial Filing | Active | |
| Terra Engineering & Construction Corporation | Commercial Filing | Active | |
| Roadsafe Traffic Systems Inc. | Commercial Filing | Active | |
| Hargrave Builders Inc | Commercial Filing | Active | |
| Anderson Lock Company, Ltd | Commercial Filing | Active | |
| Thorne Electric Inc. | Commercial Filing | Active | |
| Quality Mechanical Inc. | Commercial Filing | Active | |
| Joseph J. Henderson & Son Inc. | Commercial Filing | Active | |
| Parkway Forming Inc. | Commercial Filing | Active | |
| Superior Road Striping Inc. | Commercial Filing | Active | |
| Integrated Electrical Services Llc | Commercial Filing | Active | |
| Illinois Alarm Service, Inc. | Commercial Filing | Active | |
| A Lamp Concrete Contractors Inc. | Commercial Filing | Active | |
| Npn Carpet Installation, Inc | Commercial Filing | Active | |
| Elliott And Wood Inc. | Commercial Filing | Active | |
| Curran Contracting Company | Commercial Filing | Active | |
| Gehrke Construction Inc. | Commercial Filing | Active | |
| Sk Service Corp | Commercial Filing | Active | |
| Elite Technology Systems Llc | Commercial Filing | Active | |
| Schroeder Asphalt Services Inc. | Commercial Filing | Active | |
| Boller Construction Co Inc | Commercial Filing | Active | |
| K-Five Construction Corp | Commercial Filing | Active | |
| Galaxy Underground Inc | Commercial Filing | Active | |
| R.W. Dunteman Co. | Commercial Filing | Active | |
| Rasco Mason Contractors Inc. | Commercial Filing | Active | |
| Nia Power Llc Dba Connect Electrical Contractor | Commercial Filing | Active | |
| Hargrave Builders Inc. | Commercial Filing | Active | |
| Cummins Inc. | Commercial Filing | Active | |
| Cross Construction Inc | Commercial Filing | Active | |
| Cummins Inc. | Commercial Filing | Active | |
| Cummins Inc. | Commercial Filing | Active | |
| Midwest Asphalt Co | Commercial Filing | Active | |
| Commercial Electric Inc. | Commercial Filing | Active | |
| Nia Power Llc Dba Connect Electrical Contractor | Commercial Filing | Active | |
| Dce, Inc | Commercial Filing | Active | |
| Bacon & Vanbuskirk Glass Co Inc | Commercial Filing | Active | |
| Global Technical Systems Inc | Commercial Filing | Active | |
| Commercial Electric Inc. | Commercial Filing | Active | |
| Mauro Sewer Construction. Inc. | Commercial Filing | Active | |
| Globe Construction Inc | Commercial Filing | Active | |
| Systems Plus Inc | Commercial Filing | Active | |
| Superior Road Striping Inc. | Commercial Filing | Active | |