| Business | Phone |
| Atlas Building Maintenance 2463 Sawtelle Blvd # 203, Los Angeles 90064 | (310) 478-4521 |
| Control Building Svc Inc 10800 W Pico Blvd, Los Angeles 90064 | (310) 446-1577 |
| Black Stone Property Mgmt 5750 Wilshire Blvd, Los Angeles 90036 | (323) 692-2440 |
| Qual Bldg Maintenance Svc 5030 W Washington Blvd, Los Angeles 90016 | (661) 944-4680 |
| William's Building Maintenance 4227 Leimert Blvd, Los Angeles 90008 | (323) 293-1651 |
| Blue Ant, Inc. Janitorial Service 1433 Arapahoe St. Unit #1, Los Angeles 90006 | (310) 574-2241 |