| Business | Phone |
| Able Security Seattle 98101 | (206) 261-6642 |
| Acss 130 Nickerson St 212, Seattle 98109 | (206) 624-9776 |
| Acss Investigations 1617 S Jackson St, Seattle 98144 | (206) 329-8560 |
| American Corporate Security Po Box 4673, Seattle 98194 | (206) 465-1990 |
| American Loss Prevention Svc 603 Stewart St # 200, Seattle 98101 | (206) 467-9666 |
| Avalon Fortress Securities Seattle 98122 | (206) 324-9111 |
| Contemporary Services Corp 2505 3rd Ave 120, Seattle 98121 | (206) 292-5165 |
| Eagle Guard Svc Po Box 3194, Seattle 98114 | (206) 623-8303 |
| Guardsmark Inc 4800 S 188th St 250, Seattle 98188 | (206) 243-9774 |
| First Response Inc 655 S Orcas St 210, Seattle 98108 | (206) 762-4420 |
| Hall Service Corp Po Box 94152, Seattle 98124 | (206) 622-8552 |
| Highthawk Special Svc Seattle 98103 | (206) 931-5664 |