| Business | Phone |
| Coldwell Banker 764 Route 25a, East Setauket 11733 | (631) 941-3100 |
| First Long Is Realty Group Inc 764 Route 25a # 200, East Setauket 11733 | (631) 941-4000 |
| Flagg Properties Llc 14 Research Way, East Setauket 11733 | (631) 751-6200 |
| Joyce Philbin Key Properties 290 Main St, East Setauket 11733 | (631) 941-1100 |
| K Testa Real Estate 249 Route 25a # 9, East Setauket 11733 | (631) 751-8070 |
| L Ross Realty Inc 35 Shore Rd, East Setauket 11733 | (631) 751-6900 |