| Business | Phone |
| 20th Century Construction Corp 40 Shinnecock Ln, East Islip 11730 | (631) 224-7798 |
| Basement Builders 7 Fern Ave, East Islip 11730 | (631) 224-4567 |
| Call Handy-Andy 33 Division Ave, East Islip 11730 | (631) 581-6860 |
| Circa Construction 17 Woodland, East Islip 11730 | (631) 206-1600 |
| Diversified Construction Co 3351 Union Blvd, East Islip 11730 | (631) 277-5161 |
| Erickson Construction Corp 85 Meadowfarm Rd, East Islip 11730 | (631) 859-1690 |
| Regional Renovation Corp 99 Division Ave, East Islip 11730 | (631) 277-7400 |
| Russo Custom Designs 69 Carleton Ave, East Islip 11730 | (631) 859-3086 |
| Unique Design Home Builders 144 Carleton Ave, East Islip 11730 | (631) 277-3670 |