First St, Southold
- 75 First St Sanderson, Kyle
- 120 First St Robins Island Hldngs Llc
- 175 First St Williams, Jeffery S Jr
- 200 First St Golanec, Carey J
- 230 First St Kelly 2023 Rev Living Trt
- 380 First St Robins Island Holdings Llc
- 650 First St New Suffolk Waterfront Fund
- 705 First St Fisher, William C
- 775 First St Petrie, Daniel
- 835 First St Jackson St Hldgs Llc
- 900 First St Stein Sea Farms Llc
- 925 First St 925 First St Llc
- 1000 First St Hampton Oyster Co Llc
- 1090 First St Loria, Philip
- 1175 First St Katsoulas, Efstathios
- 1200 First St Kramer, David
- 1230 First St Annicq, Bruno
- 1275 First St Castellano, Frank
- 1380 First St Martell, Christopher
- 1640 First St Martell, Christopher