| Business | Phone |
| Board Secretary 159 Gould Ave, Caldwell 7006 | (973) 228-6438 |
| Borough-North Caldwell Adm Office 136 Gould Ave, Caldwell 7006 | (973) 228-6410 |
| Caldwell Administrative Office 1 Provost Sq, Caldwell 7006 | (973) 226-6100 |
| Caldwell Building Inspector 1 Provost Sq, Caldwell 7006 | (973) 403-4626 |
| Caldwell Municipal Clerk 1 Provost Sq, Caldwell 7006 | (973) 403-4635 |
| Caldwell Rent Board 1 Provost Sq, Caldwell 7006 | (973) 403-4638 |
| Construction Code Official 151 Gould Ave, Caldwell 7006 | (973) 228-6415 |
| North Caldwell Engineering 136 Gould Ave, Caldwell 7006 | (973) 228-6414 |
| North Caldwell Health 151 Gould Ave, Caldwell 7006 | (973) 228-6411 |
| North Caldwell Planning Board 151 Gould Ave, Caldwell 7006 | (973) 228-6412 |
| North Caldwell Violations 136 Gould Ave, Caldwell 7006 | (973) 228-6420 |
| Township Of North Caldwell 151 Gould Ave, Caldwell 7006 | (973) 226-9611 |
| Water Billing 141 Gould Ave, Caldwell 7006 | (973) 228-6416 |