| Business | Phone |
| East Hanover Adm Offices 411 Ridgedale Ave, East Hanover 7936 | (973) 428-3000 |
| East Hanover Engineering 411 Ridgedale Ave, East Hanover 7936 | (973) 428-3020 |
| East Hanover Twp Construction 411 Ridgedale Ave, East Hanover 7936 | (973) 887-5642 |
| East Hanover Twp Violations 2 Deforest Ave, East Hanover 7936 | (973) 887-1860 |