| Business | Phone |
| Biltor Contracting Corp 56 Champlin St, Ronkonkoma 11779 | (631) 737-6220 |
| Martire Home Improvements 473 Easton St, Ronkonkoma 11779 | (631) 738-7396 |
| Concept 2000 Contractors 2315 Motor Pkwy, Ronkonkoma 11779 | (631) 471-2188 |
| Cornerstone Remodeling 2181 Cedar Ave, Ronkonkoma 11779 | (631) 580-4340 |
| Mjd Home Improvements 234 Collington Dr, Ronkonkoma 11779 | (631) 737-4161 |
| Double Rr Home Improvement 148 Seneca St, Ronkonkoma 11779 | (631) 585-9084 |
| Environmental Improvements Inc 4880 Express Dr S, Ronkonkoma 11779 | (631) 467-1067 |
| Harbor Hills Home Improvement 35 18th Ave, Ronkonkoma 11779 | (631) 981-1155 |
| Alpha Windows, Siding, Roofing 2111 Lakeland Ave, Ronkonkoma 11779 | (516) 521-9134 |