| Business | Phone |
| Advanced American Realty 1915 Deer Park Ave, Deer Park 11729 | (631) 254-3988 |
| All Island Homes Realty Inc 2061 Deer Park Ave, Deer Park 11729 | (631) 667-7227 |
| Coldwell Banker 2070 Deer Park Ave, Deer Park 11729 | (631) 586-9600 |
| Ny One 2040 Deer Park Ave, Deer Park 11729 | (631) 667-7300 |
| Feldman Properties Inc 1000 Grand Blvd, Deer Park 11729 | (631) 242-1155 |
| Panoramic Properties Inc 181 E Industry Ct # A, Deer Park 11729 | (631) 242-2680 |
| Houses R Us Realty Inc 1919 Deer Park Ave, Deer Park 11729 | (631) 586-7799 |
| H Stephen Kirschner 61 E Industry Ct, Deer Park 11729 | (631) 595-9595 |
| Kwintner Realty 825 Long Island Ave, Deer Park 11729 | (631) 667-5300 |
| Rose Of Sharon Realty Inc 1870 Deer Park Ave, Deer Park 11729 | (631) 242-4444 |