| Business | Phone |
| Dayton Construction Inc 120 Lake Ave S, Nesconset 11767 | (631) 366-0630 |
| Nda Construction Inc 192 Smithtown Blvd, Nesconset 11767 | (631) 360-3818 |
| Elrler Construction 83 Joseph Pl, Nesconset 11767 | (631) 979-3719 |
| Fpf Construction Corp 82 Lake Ave S # 3, Nesconset 11767 | (631) 584-3000 |
| G R Marshall Inc 120 Lake Ave S # 15, Nesconset 11767 | (631) 360-7864 |
| Jcb Constructs Po Box 333, Nesconset 11767 | (631) 831-0123 |