| Business | Phone |
| Action Building Maintainence 257 Avenue C, Ronkonkoma 11779 | (631) 467-1670 |
| Associated Builders & Contr 33 Comac Loop, Ronkonkoma 11779 | (631) 738-2086 |
| Building Technologies Group 3275 Veterans Memorial Hwy, Ronkonkoma 11779 | (631) 285-7171 |
| Castle Ridge Development 856 Johnson Ave # 1, Ronkonkoma 11779 | (631) 585-1288 |
| Papco Assoc Inc 856 Johnson Ave # 2, Ronkonkoma 11779 | (631) 981-3809 |
| Island Estates 5044 Express Dr S, Ronkonkoma 11779 | (631) 981-7309 |
| J & J Creative Builders Corp 258 Hawkins Ave, Ronkonkoma 11779 | (631) 738-7422 |
| Psl Industries Inc 640 6th St, Ronkonkoma 11779 | (631) 738-0595 |
| John Racanelli Assoc 3505 Veterans Memorial Hwy # A, Ronkonkoma 11779 | (631) 981-3030 |
| L & A Builders Group Inc 2060 Ocean Ave, Ronkonkoma 11779 | (631) 981-4485 |
| Superior Homes Of Long Island 255 Holbrook Ave, Ronkonkoma 11779 | (631) 467-7930 |
| Whitford Development Inc 5014 Express Dr S, Ronkonkoma 11779 | (631) 471-7711 |
| Winmar Homes Ltd 344 Portion Rd, Ronkonkoma 11779 | (631) 471-5181 |