- Agawam Realty
- Allan M Schneider & Assoc Inc
- Allan M Schneider & Assoc Inc
- Allan Schneider Assoc
- Brown Harris Stevens-Hamptons
- Cook Pony Farm Real Estate Inc
- Corcoran Group
- Delalio Realty
- Delalio Realty
- Engel & Voelkers
- First Suffolk Realty
- Frank Zaperach Real Estate
- Frank Zaperach Real Estate
- George D Griffin Real Estate
- Hamptons Commercial Realty
- Hamptons Realty Group
- HCC Real Estate Corp
- Horizon Land Svc
- Isabel Jordan Real Estate
- J Alan Ornstein
- Mansfield North America
- Maurice B Cunningham Inc
- Morea Construction & Real Est
- Morea Real Estate Inc
- Morley Real Estate
- Parrish Pond Assoc
- Peconic Bay Realty
- Prestigious Property-The
- Properties Off The Hamptons
- Prudential Douglas Elliman
- R L Real Estate
- Real Hamptons Realty
- Real Property Data Systems
- Rustic Realty
- Seashell Real Estate
- Sebonac Neck Property LLC
- Sotheby's International Realty
- South Fork Realty
- Southampton Meadows
- Sweetbriar Real Estate
