| Business | Phone |
| Associated Consultants & Engrs 10 Park Pl # 42b, Butler 7405 | (973) 283-1002 |
| Barone Engineering 1572 State Rt 23, Butler 7405 | (973) 492-1220 |
| Crew Engineers Inc 1250 State Rt 23, Butler 7405 | (973) 492-3300 |
| K-Tec 10 Park Pl, Butler 7405 | (973) 838-5800 |