| Business | Phone |
| Hickman Consulting Engineers 1771 International Pkwy, Richardson 75081 | (972) 497-9889 |
| W G Assoc 1201 Richardson Dr 117, Richardson 75080 | (972) 680-1920 |
| Whitten Engineer 411 Crestover Cir, Richardson 75080 | (972) 231-7867 |
| Technical Advisors Inc 1002 N Central Expy 301, Richardson 75080 | (972) 437-9999 |
| M J Consulting Engineering 1778 N Plano Rd 200, Richardson 75081 | (972) 994-0747 |
| Triad Spectrum 1713 Analog Dr, Richardson 75081 | (972) 238-5990 |
| Brandt Engineering 300 W Renner Rd, Richardson 75080 | (214) 453-8810 |
| Childress Engineering Svc Inc 2505 N Plano Rd 1200, Richardson 75082 | (214) 451-6630 |
| Engineering Concept & Design 2505 N Plano Rd 2400, Richardson 75082 | (469) 916-6300 |
| X L Engineers Inc 4608 Breckinridge Blvd, Richardson 75082 | (972) 664-0400 |