| Business | Phone |
| Bowyer Singleton & Assoc Inc 111 W Rich Ave, Deland 32720 | (386) 785-0468 |
| Cph Engineers Inc 101 N Woodland Blvd # 600, Deland 32720 | (386) 736-4142 |
| Csi Engineering 110 W Rich Ave, Deland 32720 | (386) 740-1454 |
| Drmp Inc 101 N Woodland Blvd, Deland 32720 | (386) 785-0046 |
| Professional Engineering Inc 218 E New York Ave # D, Deland 32724 | (386) 738-7140 |
| Pds 101 N Woodland Blvd, Deland 32720 | (386) 736-2033 |
| Metric Engineering 105 W Wisconsin Ave, Deland 32720 | (386) 734-4410 |