| Business | Phone |
| Ground Engineering Consultants 350 Pfingsten Rd 106, Northbrook 60062 | (847) 559-0085 |
| Innovative Building Concepts 1984 Raymond Dr, Northbrook 60062 | (847) 562-1888 |
| Mark's Design Specialty 2139 Valley Rd, Northbrook 60062 | (847) 272-6747 |
| Northbrook Engineering 690 Sanders Rd, Northbrook 60062 | (847) 272-8236 |
| S H Cohen & Assoc 3330 Dundee Rd N5, Northbrook 60062 | (847) 480-8905 |
| Sohn Engineering 2740 Quail Ln, Northbrook 60062 | (847) 564-4222 |
| Strong Concepts 1249 Shermer Rd 100, Northbrook 60062 | (847) 564-0386 |
| Tkj Consulting 632 Anthony Trl, Northbrook 60062 | (847) 498-2630 |
| Klaucens & Assoc Inc 3239 Arnold Ln, Northbrook 60062 | (847) 498-5950 |
| Lionheart Engineering Pc 3374 Commercial Ave, Northbrook 60062 | (847) 291-1413 |
| Raf Technical Svc 3265 Robincrest Dr, Northbrook 60062 | (847) 291-1406 |
| S & J Consulting Inc 333 Skokie Blvd, Northbrook 60062 | (847) 498-2636 |
| Salse Engineering Assoc Inc 3300 Commercial Ave B, Northbrook 60062 | (847) 559-8881 |
| Spectrum Engineering 633 Skokie Blvd, Northbrook 60062 | (847) 753-9640 |
| Stuart K Jacobson & Assoc Ltd 400 Skokie Blvd, Northbrook 60062 | (847) 480-8899 |
| Triodyne Consulting Engineers 666 Dundee Rd 103, Northbrook 60062 | (847) 677-4730 |