W Prospect St, Southampton, Village
- 30 W Prospect St 30 Wps Llc
- 34 W Prospect St 34 West Prospect Street L
- 40 W Prospect St Francis Adamczeski
- 52 W Prospect St Jacqueline A Vita
- 58 W Prospect St 58 Wps Llc
- 72 W Prospect St Elizabeth Mansfield
- 78 W Prospect St Louise Tiffany Taylor
- 86 W Prospect St Frenleigh Manor Llc
- 110 W Prospect St Adam R Katz
- 118 W Prospect St Keatsford Llc
- 121 W Prospect St Long Island Power Authori
- 128 W Prospect St Dmdc Holdings Llc
- 138 W Prospect St Thomas G Mc Elroy
- 140 W Prospect St Jane Margaret Sherry
- 160 W Prospect St Lucy Puig Neis
- 168 W Prospect St James Iselin
- 174 W Prospect St Supplemental Needs Trust
- 179 W Prospect St Barbara Margaritis
- 197 W Prospect St Myrna E De Jesus
- 205 W Prospect St Bertha Stachecki
- 225 W Prospect St Robert Zachary Epley
- 239 W Prospect St Suffolk County Water Auth
- 240 W Prospect St Omeed Malik
- 241 W Prospect St Suffolk County Water Auth
- 296 W Prospect St Richard F Hite
- 296 W Prospect St Richard F Hite