| Business | Phone |
| Abrams Development Group Inc 5850 Waterloo Rd # 230, Columbia 21045 | (410) 461-4340 |
| Austin Group Ltd 10805 Hickory Ridge Rd, Columbia 21044 | (410) 997-3184 |
| Brantly Development Group 8835 Columbia 100 Pkwy # P, Columbia 21045 | (410) 730-0810 |
| Corridor Real Estate Inc 5570 Sterrett Pl # 201, Columbia 21044 | (301) 596-3877 |
| Freestate Housing 6851 Oak Hall Ln # 100, Columbia 21045 | (410) 381-3900 |
| James M Jost & Co Inc 7370 Grace Dr, Columbia 21044 | (301) 596-9200 |
| Landsource Ltd Partnership 10480 Little Patuxent Pky #400, Columbia 21044 | (410) 740-5674 |
| Lovell America Inc 9030 Red Branch Rd, Columbia 21045 | (410) 997-7222 |
| Mc Cuan Development Group 5550 Sterrett Pl, Columbia 21044 | (410) 715-8459 |
| Mdg Co 5550 Sterrett Pl # 312, Columbia 21044 | (410) 730-9091 |
| Pdc Inc 5840 Banneker Rd # 110, Columbia 21044 | (410) 740-9863 |
| Russett Center Ltd 9200 Rumsey Rd # 200, Columbia 21045 | (410) 997-7222 |
| Williams Properties 6660 Dobbin Rd, Columbia 21045 | (410) 381-7766 |
| Y J Lovell & America Inc 9030 Red Branch Rd, Columbia 21045 | (410) 995-1364 |