| Business | Phone |
| Bettyjo Sheehy Real Estate 40 Winding Way, Water Mill 11976 | (631) 726-5553 |
| Deerfield Realty Partners Llc 1461 Deerfield Rd, Water Mill 11976 | (631) 726-7031 |
| Dlo Enterprises Inc Watermill Towd Rd, Water Mill 11976 | (631) 726-6653 |
| Hampton Horizons Real Estate 760 Montauk Hwy, Water Mill 11976 | (631) 726-4330 |
| J R Siwicki Jr Inc 670 Montauk Hwy, Water Mill 11976 | (631) 726-6600 |
| Steven E Schade Assoc 435 Edge Of Woods Rd, Water Mill 11976 | (631) 283-3883 |
| Tara Jean Assoc Inc 6 Farmstead Ln, Water Mill 11976 | (631) 726-5600 |
| Water Mill Square Assoc Montauk Hwy, Water Mill 11976 | (631) 726-6770 |