| Business | Phone |
| Camelot Security Svc 302 N Pacific St, San Marcos 92069 | (760) 734-5775 |
| Securitas Security Svc Usa Inc 145 Vallecitos De Oro, San Marcos 92069 | (760) 471-8072 |
| Prm 1905 Diamond St # B, San Marcos 92078 | (760) 744-0028 |
| Millenia Security Svc 813 W San Marcos Blvd, San Marcos 92078 | (760) 736-4480 |
| Hidden Valley Security Svc 197 Woodland Pkwy # 104, San Marcos 92069 | (760) 744-1061 |