| Business | Phone |
| Bnf Contractors Inc 17 Mark Twain Ln, East Setauket 11733 | (631) 246-8900 |
| Cypress Construction 62 Upper Sheep Pasture Rd, East Setauket 11733 | (631) 689-2800 |
| Giranda Construction Corp 21 Bunny Ln, East Setauket 11733 | (631) 476-0029 |
| Island Combined Contracting 1 Stalker Ln, East Setauket 11733 | (631) 331-2630 |
| Landale Construction Corp 3 Cynthia Ct, East Setauket 11733 | (631) 246-5050 |
| Tromel Construction Corp 21 High Gate Dr, East Setauket 11733 | (631) 689-1387 |
| Woltmann Associates Inc 2 Enterprise Dr, East Setauket 11733 | (631) 928-1761 |