| Business | Phone |
| Armstrong Management Corp 100 Ring Rd W # 102, Garden City 11530 | (516) 873-6464 |
| Beach Haven Apartments 5 & 6 225 Nassau Blvd S, Garden City 11530 | (516) 481-3662 |
| Central Management 45 7th St, Garden City 11530 | (516) 873-0800 |
| Dayton Seaside Assoc Iii 350 Old Country Rd, Garden City 11530 | (516) 741-4144 |
| Devolution Inc 144 Garden St, Garden City 11530 | (516) 248-7172 |
| Ghp Office Realty 585 Stewart Ave # 500, Garden City 11530 | (516) 222-1900 |
| Hamilton Garden Corp 115 2nd St, Garden City 11530 | (516) 294-5953 |
| Realco Inc 100 Ring Rd W, Garden City 11530 | (516) 294-7070 |
| J P Consulting & Management 233 7th St # 17, Garden City 11530 | (516) 747-2464 |
| John F Chianese Rlty Mgmt Inc 647 Franklin Ave, Garden City 11530 | (516) 742-5029 |
| Jonas Equities 600 Old Country Rd, Garden City 11530 | (516) 228-9660 |
| Landcom Acquisitions Ltd 100 Ring Rd W # 102, Garden City 11530 | (516) 873-0686 |
| Lighthouse 1101 Stewart Av 1101 Stewart Ave, Garden City 11530 | (516) 745-0847 |
| Skyline Management Corp 600 Old Country Rd # 425, Garden City 11530 | (516) 393-8400 |
| Zhl Management 1225 Franklin Ave, Garden City 11530 | (516) 369-1539 |