| Business | Phone |
| M Wein Realty Inc 36 N Ferry Rd, Shelter Island 11964 | (631) 749-0999 |
| Corcoran Group 181 N Ferry Rd, Shelter Island 11964 | (631) 749-1600 |
| Mvm Island Realty 6 S Ferry Rd, Shelter Island 11964 | (631) 749-0577 |
| Osprey Realty Route 114, Shelter Island 11964 | (631) 749-2333 |
| Georgiana B Ketcham Realty 90 S Ferry Rd, Shelter Island 11964 | (631) 749-0800 |
| Jerry L Cohen & Assoc Llc 44 Gardiners Bay Dr, Shelter Island 11964 | (631) 749-4192 |