| Business | Phone |
| Beta Design Group Inc 70 Ionia Ave Sw 400, Grand Rapids 49503 | (616) 235-6220 |
| Driesenga & Assoc 4398 Roger B Chaffee Mem Dr Se, Grand Rapids 49548 | (616) 249-3800 |
| Fleis & Vandenbrink Engrng Inc 2960 Lucerne Dr Se, Grand Rapids 49546 | (616) 977-1000 |
| Gosselin Group 3777 Sparks Dr Se, Grand Rapids 49546 | (616) 954-2770 |
| Kraus & Kessenich 1025 Spaulding Ave Se, Grand Rapids 49546 | (616) 957-1625 |
| Williams & Works Inc 549 Ottawa Ave Nw, Grand Rapids 49503 | (616) 224-1500 |
| Wade Trim 2944 Fuller Ave Ne, Grand Rapids 49505 | (616) 363-8181 |
| Roosien & Assoc 5055 Plainfield Ave Ne, Grand Rapids 49525 | (616) 361-7220 |
| Prein & Newhof 3355 Evergreen Dr Ne, Grand Rapids 49525 | (616) 364-8491 |
| Omm Engineering Inc 1680 East Paris Ave Se 1, Grand Rapids 49546 | (616) 957-4350 |
| Moore & Bruggink Inc 2020 Monroe Ave Nw, Grand Rapids 49505 | (616) 363-9801 |
| Nederveld Associates Inc 4079 Park East Ct Se C, Grand Rapids 49546 | (616) 575-5190 |
| Medema Van Kooten & Assoc Inc 252 State St Se 1, Grand Rapids 49503 | (616) 451-0639 |