| Business | Phone |
| Isis 21700 Greenfield Rd, Oak Park 48237 | (248) 967-5057 |
| Kerr Security Svc 21500 Greenfield Rd 112, Oak Park 48237 | (248) 968-4425 |
| Aarmco Inc 20770 Greenfield Rd, Oak Park 48237 | (248) 968-0707 |
| Tower Security Inc 20770 Greenfield Rd, Oak Park 48237 | (248) 968-1500 |
| Tenable Protective Svc 13141 Northend Ave, Oak Park 48237 | (248) 541-9700 |
| Tact Security Svc Inc 21700 Greenfield Rd 248, Oak Park 48237 | (248) 968-1946 |
| Strategic Protection Group Inc 25900 Greenfield Rd 144, Oak Park 48237 | (248) 968-9800 |
| Security Central Protection 12821 Capital St, Oak Park 48237 | (248) 543-0000 |