| Business | Phone |
| Blue Star Inc 168 Laurel Ave, Northport 11768 | (631) 261-7667 |
| Mangogna Construction Corp 53 School St, Northport 11768 | (631) 754-5911 |
| County Building Inc 21 Major Trescott Ln, Northport 11768 | (631) 261-5353 |
| Qualitech Home Builders Inc 4 Norfolk Dr, Northport 11768 | (917) 622-2621 |
| Tast Corp 81 Scudder Ave, Northport 11768 | (631) 261-3540 |