| Business | Phone |
| Advanced Engineering Design 4503 Broadmoor Ave Se, Grand Rapids 49512 | (616) 656-9650 |
| Artisan Design 2680 Horizon Dr Se F2, Grand Rapids 49546 | (616) 940-0880 |
| C C Johnson & Malhotra 3310 Eagle Park Dr Ne 101, Grand Rapids 49525 | (616) 940-2007 |
| Capital Consultants Inc 648 Monroe Ave Nw # 210, Grand Rapids 49503 | (616) 742-8914 |
| Century A & E 168 Louis Campau Promenade Nw, Grand Rapids 49503 | (616) 456-5227 |
| H T Engineering Inc 802 Merritt St Se, Grand Rapids 49507 | (616) 452-3279 |
| Handex Environmental 2016 Houseman Ave Ne, Grand Rapids 49505 | (616) 361-0367 |
| John W Wilcox Pe 2310 Elmwood Dr Se, Grand Rapids 49506 | (616) 452-4556 |
| Kane Engineering Group Inc 4873 Riemen Ct Se, Grand Rapids 49508 | (616) 281-5858 |
| L S Engineering 1345 Monroe Ave Nw, Grand Rapids 49505 | (616) 643-0810 |
| Zocalo Engineering 1610 Timberlane Ln Ne, Grand Rapids 49505 | (616) 447-9449 |
| Land Development Solutions 62 Commerce Ave Sw 201, Grand Rapids 49503 | (616) 301-7888 |
| Levant Inc 38 W Fulton St, Grand Rapids 49503 | (616) 233-7570 |
| Vander Horst & Assoc Engineers 7448 Eastern Ave Se, Grand Rapids 49508 | (616) 698-9405 |
| Tetra Tech Mps 3949 Sparks Dr Se 101, Grand Rapids 49546 | (616) 942-5566 |
| Sts Consultants Ltd 3839 E Paris Ave Se 301, Grand Rapids 49512 | (616) 940-3077 |
| Sts Hydro Power Ltd 4142 Grand River Dr Ne, Grand Rapids 49525 | (616) 361-9910 |
| Schaut Associates 2530 Leonard St Nw, Grand Rapids 49504 | (616) 453-0174 |
| Scott Civil Engineering 1345 Monroe Ave Nw, Grand Rapids 49505 | (616) 458-8792 |
| Scott Civil Engineering Co 1324 Lake Dr Se, Grand Rapids 49506 | (616) 774-9376 |
| Richard Jones & Assoc 6157 28th St Se, Grand Rapids 49546 | (616) 957-5000 |
| Ois Inc 3529 Patterson Ave Se, Grand Rapids 49512 | (616) 949-4550 |
| Quad Tech Inc 4439 Eastern Ave Se D, Grand Rapids 49508 | (616) 532-1606 |
| Nth Consultants Ltd 4635 44th St Se C180, Grand Rapids 49512 | (616) 957-3690 |
| Metrology & Engineering Tech 3512 Roger B Chaffee Mem Dr Se, Grand Rapids 49548 | (616) 452-6380 |