| Business | Phone |
| A J Koltavary Civil Engineers 17802 Mitchell N, Irvine 92614 | (949) 752-5466 |
| Act Consulting Engineers 5 Corporate Park # 268, Irvine 92606 | (949) 752-2268 |
| Adams Streeter Civil Engineers 15 Corporate Park, Irvine 92606 | (949) 474-2330 |
| Akm Consulting Engineers 553 Wald, Irvine 92618 | (949) 753-7333 |
| Ampak 17782 Cowan # D, Irvine 92614 | (818) 894-3705 |
| Aztec Engineering 1 Corporate Park # 101, Irvine 92606 | (949) 852-4611 |
| B V Engineering Inc 1 Corporate Park # 101, Irvine 92606 | (949) 852-0517 |
| C & V Consulting Inc 1 Technology Dr, Irvine 92618 | (949) 450-8100 |
| Dmc Engineering 18 Technology Dr, Irvine 92618 | (949) 753-9393 |
| E N Engineering Inc 1920 Main St # 850, Irvine 92614 | (949) 486-0777 |
| Entech Engineers Inc 27 Mauchly # 207, Irvine 92618 | (949) 788-0170 |
| Focus Engineering 25 Mauchly # 317, Irvine 92618 | (949) 450-0590 |
| Fpl & Assoc Inc 10 Corporate Park # 310, Irvine 92606 | (949) 252-1688 |
| Fuscoe Engineering Inc 16795 Von Karman Ave # 100, Irvine 92606 | (949) 474-1960 |
| G & F Consulting Engineers Inc 1 Jenner, Irvine 92618 | (949) 679-0060 |
| Harris & Assoc Inc 34 Executive Park # 150, Irvine 92614 | (949) 655-3900 |
| Mds Consulting 17320 Red Hill Ave # 350, Irvine 92614 | (949) 251-8821 |
| Mfg Inc 17770 Cartwright Rd, Irvine 92614 | (949) 253-2951 |
| Pbs & J 18022 Cowan # 100a, Irvine 92614 | (949) 660-8600 |
| Rmc Inc 17801 Cartwright Rd, Irvine 92614 | (949) 250-0300 |
| Stevenson Porto & Pierce Inc 18195 E Mcdurmott # C, Irvine 92614 | (949) 660-8822 |
| Van Dell & Assoc Inc 17801 Cartwright Rd, Irvine 92614 | (949) 474-1400 |
| Washington Group Intl 17300 Red Hill Ave # 150, Irvine 92614 | (949) 756-6006 |
| Okerenson Corp Po Box 52794, Irvine 92619 | (949) 726-8140 |
| Itf Engineering Po Box 50756, Irvine 92619 | (949) 857-1813 |