| Business | Phone |
| American International Guard 1200 W El Segundo Blvd, Gardena 90247 | (323) 777-7532 |
| Best Protection Agency Po Box 4965, Gardena 90249 | (323) 758-2378 |
| Construction Protective Svc 436 W Walnut St, Gardena 90248 | (310) 818-1052 |
| Guard Dogs 1207 W El Segundo Blvd, Gardena 90247 | (323) 242-6733 |
| American Professional Sec Inc Gardena 90248 | (310) 380-5558 |
| United Security Industries 100 W Alondra Blvd, Gardena 90248 | (310) 324-4601 |
| J & H Security Svc Gardena 90248 | (310) 512-7807 |
| Johnson Professional Security 18726 S Western Ave, Gardena 90248 | (310) 523-9068 |
| Mobile Globe Security Inc Gardena 90248 | (310) 769-5951 |
| All In One Sound & Security 2215 Marine Ave, Gardena 90249 | (310) 327-7876 |
| Angeles Private Security 14118 S Normandie Ave, Gardena 90249 | (310) 217-0380 |
| B & D Co Inc 1036 W Gardena Blvd, Gardena 90247 | (310) 538-3285 |
| Platinum Department Of Public Gardena 90249 | (310) 675-8820 |
| West Coast Private Security 2501 W Redondo Beach Blvd, Gardena 90249 | (310) 538-6884 |