| Business | Phone |
| John Ryan Engineering 219 Kenilworth Rd, Ridgewood 7450 | (201) 652-2121 |
| Baranson Associates Inc 45 N Broad St # 307, Ridgewood 7450 | (201) 652-0780 |
| Van Ness Engineering 75 Franklin Ave, Ridgewood 7450 | (201) 445-8685 |
| Paf Assoc 323 Hamilton Rd, Ridgewood 7450 | (201) 447-3054 |
| Norton Engineering Consultants 133 N Pleasant Ave, Ridgewood 7450 | (201) 670-7935 |