| # | Company name | Role | # of projects |
|---|---|---|---|
| 1 | Air-Rite Heating & Cooling | Mechanical systems installation | 6 |
| 2 | Baxter & Woodman Inc, Consulting Engineers | Civil engineering | 1 |
| 3 | Brink Engineering Inc | Civil engineering | 0 |
| 4 | Chris & Lori Ohlroggi | Client | 0 |
| 5 | Design Tek Engineering | Civil engineering | 1 |
| 6 | Gemini Construction Corporation | General contractor | 0 |
| 7 | George Allen Construction Co | General contractor | 3 |
| 8 | Kuypers Brothers | Concrete supplier | 2 |
| 9 | Mokena Fire Protection District | Client | 0 |
| 10 | Mokena Public School District #159 | Client | 0 |
| 11 | Mokena School District #159 | Client | 0 |
| 12 | Nextel Wariwick | Client | 1 |
| 13 | Stan Gage | General contractor | 1 |
| 14 | Wegner Plumbing Company | Plumbing contractor | 1 |