| Business | Phone |
| Management Concepts 909 Marconi Ave, Ronkonkoma 11779 | (631) 588-5450 |
| Daniel Falasco Consulting 2150 Smithtown Ave, Ronkonkoma 11779 | (631) 585-4982 |
| Emtec Consultants Pllc 3555 Veterans Memorial Hwy # M, Ronkonkoma 11779 | (631) 981-3990 |
| Islandwide Home Inspection Svc 9 Forest Ct # A, Ronkonkoma 11779 | (631) 467-4663 |
| Jacobsen & Horan Engineering 990 S 2nd St, Ronkonkoma 11779 | (631) 580-6100 |
| Savik & Murray 2150 Smithtown Ave, Ronkonkoma 11779 | (631) 467-7775 |
| William Suckow 3555 Veterans Memorial Hwy, Ronkonkoma 11779 | (631) 467-6977 |