| 303rd Engineering Group, LLC | 30199 | A/E | — |
| ABNA of Illinois, Inc. | 35414 | A/E | — |
| Accurate-Superior Scale Co | 7583 | Subcontractor | — |
| ACME Constructors, Inc. | 34824 | Subcontractor | — |
| Ahrens Contracting, Inc. | 25825 | Contractor | — |
| Alberici Constructors, Inc. | 30524 | Contractor | — |
| All American Painting Co, LLC | 35004 | Subcontractor | — |
| Aptos Now LLC | 35983 | Supplier | — |
| Arcturis, Inc. | 27629 | A/E | — |
| ATIS Elevator Inspections LLC | 35909 | Subcontractor | — |
| Behrmann Company | 4552 | Supplier | — |
| Bond Architects, Inc. | 21633 | A/E | — |
| Boyer Fire Protection, LLC | 30403 | Contractor | — |
| BUDROVICH CONTRACTING CO | 40452 | Subcontractor | — |
| Byrne & Jones Enterprises, Inc. | 27570 | Contractor | — |
| Captiva Partners Inc | 41129 | Subcontractor | — |
| Centrex Electrical Supply Corp. | 31918 | Subcontractor | — |
| Civil Design, Inc. | 30046 | A/E | — |
| Code Consultants, Inc. | 23032 | A/E | — |
| Collins & Hermann, Inc. | 445 | Contractor | — |
| Coltrane Systems, LLC | 33114 | Contractor | — |
| Concrete Strategies LLC | 31865 | Subcontractor | — |
| CONTROLCO, Inc. | 30154 | Contractor | — |
| Core & Main LP | 31200 | Supplier | — |
| Counsilman Hunsaker & Associates Inc | 22321 | A/E Specialty Consultant | — |
| Crawford, Murphy & Tilly, Inc. | 3232 | A/E | — |
| Custom Engineering, Inc. | 34559 | A/E | — |
| D&K Welding Services, Inc. | 35590 | Subcontractor | — |
| D. Johnson Painting LLC | 40638 | Subcontractor | — |
| Dannix Painting, LLC | 40922 | Subcontractor | — |
| Environmental Operations, Inc. | 35899 | Subcontractor | — |
| Envision Lighting Design, LLC | 34905 | A/E Specialty Consultant | — |
| EVEREST Estimating Services, LLC | 40803 | A/E Specialty Consultant | — |
| Faith Group, L.L.C. | 33845 | A/E | — |
| Farnsworth Group, Inc. | 28420 | A/E | — |
| Fields Electrical Supply, Inc. | 35323 | Supplier | — |
| Fire Solutions Inc. | 35881 | Contractor | — |
| Fire Stop Technologies, Inc. | 34567 | Subcontractor | — |
| Fire Tech LLC | 30822 | Subcontractor | — |
| Flooring Systems, Inc. | 33358 | Subcontractor | — |
| GGRK Inc. | 40597 | Subcontractor | — |
| Golterman & Sabo Inc. | 1198 | Subcontractor | — |
| Gray Design Group of Illinois, Inc. | 30806 | A/E | — |
| Health, Education and Research Associates, Inc. | 33292 | Subcontractor | — |
| Horner & Shifrin, Inc. | 6656 | A/E | — |
| HYDE HEATING &SHEET METAL, INC | 40516 | Subcontractor | — |
| IMEG Consultants Corp. | 34178 | A/E | — |
| Interior Construction Services, LTD. | 20998 | Contractor | — |
| Introba Inc. | 40112 | A/E | — |
| Jacobs Engineering Group Inc. | 31073 | A/E | — |
| James G. Staat Tuckpointing, Inc. | 29417 | Contractor | — |
| Keeley Restoration Services, LLC | 41210 | Contractor | — |
| Kendall LLC | 40695 | Subcontractor | — |
| KPFF, Inc. | 30322 | A/E | — |
| Kuhlmann Leavitt, Inc. | 35906 | A/E Specialty Consultant | — |
| Lawrence Fabric Structures, Inc. | 40736 | Subcontractor | — |
| LNB Studio LLC | 35791 | A/E | — |
| Mid-Valley Radiants & Industrials, LLC | 33432 | Supplier | — |
| Midwest Elevator Co., Inc. | 40767 | Contractor | — |
| MOON RIVER SIGN COMPANY | 40488 | Subcontractor | — |
| Murphy Company Mechanical Contractors and Engineers | 30493 | Contractor | — |
| NAVIGATE Building Solutions, LLC | 40715 | Construction Manager | — |
| Negwer Materials Inc | 29764 | Supplier | — |
| Next Level Construction, LLC | 41133 | Subcontractor | — |
| NGG Ltd., Incorporated | 32411 | Subcontractor | — |
| Oculus, Inc. | 31156 | A/E | — |
| Planning Design Studio LLC | 40417 | A/E Specialty Consultant | — |
| Premier Demolition Inc | 27623 | Contractor | — |
| Professional Environmental Engineers, Inc. | 28728 | A/E | — |
| Raineri Construction, LLC | 33103 | Contractor | — |
| Rapid Fire Safety & Security LLC | 41201 | Contractor | — |
| Roofers Mart, Inc. | 34113 | Supplier | — |
| S. M. Wilson & Co. | 675 | Contractor | — |
| S. M. Wilson & Co. | 30737 | Construction Manager | — |
| Shannon & Wilson, Inc. | 34805 | A/E | — |
| Solutions AEC, LLC | 40676 | A/E | — |
| Spirtas Company, Inc. | 25806 | Subcontractor | — |
| Subsurface Constructors, Inc. | 33337 | Subcontractor | — |
| Superior Waterproofing & Restoration Co Inc | 26351 | Subcontractor | — |
| SWT Design, Inc. | 34964 | Subcontractor | — |
| Tarlton Corporation | 611 | Contractor | — |
| Terracon Consultants, Inc. | 29343 | A/E | — |
| The Designery Hub LLC | 40667 | Subcontractor | — |
| The Lawrence Group Architects of St. Louis, Inc. | 29294 | A/E | — |
| The McClure Corporation | 29470 | A/E | — |
| Thompson Civil, LLC | 34630 | A/E | — |
| Thornburgh Abatement, Inc. | 28210 | Contractor | — |
| Thornburgh Insulation, Inc. | 34122 | Subcontractor | — |
| Tony Prince Co, Inc. | 40766 | Subcontractor | — |
| Trivers Associates, Inc. | 19822 | A/E | — |
| Utility Service & Maintenance, Inc. | 40875 | Subcontractor | — |
| Vee-Jay Cement Contracting Company Inc. | 32197 | Subcontractor | — |
| Webb Engineering Services Inc. | 30812 | A/E | — |
| WSP USA Buildings Inc. | 40346 | A/E | — |